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SUPPORTEDHIGH CONFIDENCEVERIFIED 24 AUG 2026

Canonical · Operating system

Ubuntu 24.04 LTS

Ubuntu is a Linux operating system distributed by Canonical for desktop computers, servers, cloud systems and edge devices.

Record scope: all represented editions · all channels · all architectures · Global. View the Ubuntu family.

Canonical record: https://lifecycle.blacktree.nl/catalogue/ubuntu-24-04-lts · Generated 2026-10-07 14:55 UTC.

Product overview

Ubuntu is a Linux operating system distributed by Canonical for desktop computers, servers, cloud systems and edge devices.

Main capabilities

  • Desktop and server operating environments
  • APT software packaging and updates
  • Networking, storage, security and virtualization tooling

Typical use

Developer workstations, application servers, cloud instances, containers and infrastructure hosts.

Deployment

Installed on physical or virtual machines, supplied as cloud images, or used as a container base image.

Description source: Ubuntu product downloads · reviewed 22 Sep 2026

Lifecycle

Date definitions
PhaseStartEndStateCoverage and conditions
Standard security maintenance25 April 2024day precision31 May 2029day precisionconfirmedStandard coverageConditions: Packages in Main
Expanded Security MaintenancePaid or extended1 June 2029day precision31 May 2034day precisionconditionalMain and Universe subject to product termsConditions: Ubuntu Pro subscription
Legacy add-onPaid or extended1 June 2034day precision31 May 2039day precisionconditionalSecurity maintenance and supportConditions: Legacy add-on to Ubuntu Pro

Release notes

Version-specific publisher information

Release notes describe changes in this version. Their publication dates are not treated as support or retirement boundaries.

Release-note research has not completed for this version.

Publisher updates and known issues

CVE Intelligence enrichment

These records add release notes, security advisories and known-issue context. Their publication dates are not lifecycle boundaries.

CANONICALUSN-8882-1

USN-8882-1: Tesseract vulnerabilities

It was discovered that Tesseract incorrectly handled crafted .traineddata models. An attacker could possibly use this issue to cause Tesseract to crash, resulting in a denial of service. (CVE-2026-73067) It was discovered that Tesseract did not properly validate dimensions in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-73066) It was discovered that Tesseract did not properly limit token lengths in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-88047) It was discovered that Tesseract did not properly validate layer dimensions in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-88048) It was discovered that Tesseract did not properly validate layer sizes in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-88049) It was discovered that Tesseract incorrectly handled negative character codes in crafted .traineddata models. An attacker could possibly use this issue to cause Tesseract to crash, resulting in a denial of service. (CVE-2026-88050) It was discovered that Tesseract did not properly validate vector sizes in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-88051) It was discovered that Tesseract did not properly validate character IDs in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-88052) It was discovered that Tesseract did not properly validate classifier counts in crafted .traineddata models. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-88053) It was discovered that Tesseract incorrectly handled empty network layers in crafted .traineddata models. An attacker could possibly use this issue to cause Tesseract to crash, resulting in a denial of service. (CVE-2026-88054)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8883-1

USN-8883-1: Go vulnerability

It was discovered that the Go x/net/idna package incorrectly handled certain Punycode-encoded labels that decoded to ASCII-only labels. An attacker could possibly use this issue to bypass hostname-based access controls and escalate privileges.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8884-1

USN-8884-1: U-Boot vulnerabilities

Timo Preißl discovered that U-Boot incorrectly handled certain malformed ZFS file system metadata. An attacker could possibly use this issue to trigger an integer overflow and out-of-bounds memory access, resulting in arbitrary code execution or a denial of service. (CVE-2025-70290) Timo Preißl discovered that U-Boot incorrectly calculated buffer sizes when processing certain ext4 file systems. An attacker could possibly use this issue to trigger an integer overflow and out-of-bounds memory access, resulting in arbitrary code execution or a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2025-70293) Mateusz Furdyna discovered that U-Boot incorrectly handled certain fragmented IP traffic when IP defragmentation was enabled. An attacker could possibly use this issue to corrupt memory by sending crafted IP fragments, resulting in arbitrary code execution. (CVE-2026-15390) Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain fragmented IP traffic during network boot when IP defragmentation was enabled. An attacker could possibly use this issue to trigger an out-of-bounds write, resulting in a denial of service. (CVE-2026-71971)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8885-1

USN-8885-1: FluidSynth vulnerabilities

It was discovered that FluidSynth did not properly validate the channel argument of the pitch_bend_range command. A remote attacker could possibly use this issue to cause FluidSynth to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-58264) It was discovered that FluidSynth incorrectly handled configurations with more than 16 MIDI channels in its MIDI player, leading to a heap buffer overflow. An attacker could possibly use this issue to cause FluidSynth to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-61714)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8886-1

USN-8886-1: Linux kernel (NVIDIA Tegra) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - NVDIMM (Non-Volatile Memory Device) drivers; - Handshake API; - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - OpenRISC architecture; - PowerPC architecture; - S390 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - Intel NPU Driver; - Android drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Hardware random number generator core; - TPM device driver; - CPU frequency scaling framework; - Hardware crypto device drivers; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - I2C subsystem; - IIO ADC drivers; - IIO subsystem; - InfiniBand drivers; - Input Device core drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - Multiple devices driver; - Media drivers; - Multifunction device drivers; - Fastrpc Driver; - Amazon Nitro Secure Module driver; - MMC subsystem; - MTD block device drivers; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - Texas Instruments network drivers; - NTB driver; - NVME drivers; - NVMEM (Non Volatile Memory) drivers; - Parport drivers; - Pin controllers subsystem; - x86 platform drivers; - i.MX PM domains; - System reset/shutdown drivers; - PTP clock framework; - Voltage and Current Regulator drivers; - S/390 drivers; - SCSI subsystem; - SPI subsystem; - Realtek RTL8723BS SDIO drivers; - VME bus staging drivers; - Thermal drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - DesignWare USB2 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB Dual Role (OTG-ready) Controller drivers; - USB Serial drivers; - USB Type-C Port Controller Manager driver; - vDPA drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Watchdog drivers; - 9P distributed file system; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EROFS file system; - exFAT file system; - F2FS file system; - FUSE (File system in Userspace); - Journaling layer for block devices (JBD2); - Network file system (NFS) client; - Network file system (NFS) server daemon; - NTFS3 file system; - OCFS2 file system; - Proc file system; - SMB network file system; - Tracing file system; - UDF file system; - XFS file system; - Key management; - BPF subsystem; - Control group (cgroup); - Glob pattern matching library; - MAC80211 subsystem; - Mellanox drivers; - Networking core; - Network sockets; - IPv6 networking; - Bluetooth subsystem; - Wireless networking; - IPv4 networking; - Netfilter; - Network traffic control; - SCTP protocol; - TCP network protocol; - XFRM subsystem; - RDMA verbs API; - io_uring subsystem; - IPC subsystem; - Audit subsystem; - Kernel CPU control infrastructure; - Perf events; - Kernel exit() syscall; - Kernel fork() syscall; - Scheduler infrastructure; - Signal handling mechanism; - Timer subsystem; - Tracing infrastructure; - Resizable hashtable library; - Memory management; - 6LoWPAN network protocol; - Asynchronous Transfer Mode (ATM) subsystem; - B.A.T.M.A.N. meshing protocol; - Ethernet bridge; - CAN network layer; - Ceph Core library; - Ethtool driver; - HSR network protocol; - IEEE802154.4 network protocol; - IUCV driver; - KCM (Kernel Connection Multiplexor) sockets driver; - IEEE 802.15.4 subsystem; - Multipath TCP; - Open vSwitch; - Packet sockets; - Phonet protocol; - Qualcomm IPC Router (QRTR); - RDS protocol; - RxRPC session sockets; - SMC sockets; - Sun RPC protocol; - TIPC protocol; - TLS protocol; - Unix domain sockets; - VMware vSockets driver; - X.25 network layer; - eXpress Data Path; - AppArmor security module; - Integrity Measurement Architecture(IMA) framework; - SELinux security module; - ALSA framework; - HD-a

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8887-1

USN-8887-1: Linux kernel vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table (RMP) checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory. (CVE-2023-20585) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - NVDIMM (Non-Volatile Memory Device) drivers; - Handshake API; - ARM32 architecture; - MIPS architecture; - OpenRISC architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Cryptographic API; - Compute Acceleration Framework; - Intel NPU Driver; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - Rados block device (RBD) driver; - Ublk userspace block driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - TPM device driver; - Data acquisition framework and drivers; - Hardware crypto device drivers; - CXL (Compute Express Link) drivers; - DAX dirext access to differentiated memory framework; - DIBS (Direct Internal Buffer Sharing) drivers; - Buffer Sharing and Synchronization framework; - DMA engine subsystem; - DPLL subsystem; - EDAC drivers; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIB drivers; - GPIO subsystem; - GPU drivers; - HID subsystem; - Microsoft Hyper-V drivers; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - I3C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device (Miscellaneous) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Mailbox framework; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Intel Management Engine Interface driver; - Amazon Nitro Secure Module driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - Ethernet bonding driver; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVME drivers; - Device tree and open firmware driver; - Operating Performance Points (OPP) driver; - PCI subsystem; - Pin controllers subsystem; - x86 platform drivers; - i.MX PM domains; - MediaTek PM domains; - Power supply drivers; - PTP clock framework; - RapidIO drivers; - Voltage and Current Regulator drivers; - Remote Processor subsystem; - MPAM driver; - Reset controller framework; - Real Time Clock drivers; - S/390 drivers; - SCSI subsystem; - Xilinx SoC drivers; - SoundWire subsystem; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TTY drivers; - UFS subsystem; - USB DSL drivers; - USB core drivers; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB Dual Role (OTG-ready) Controller drivers; - USB Serial drivers; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Virtio drivers; - Watchdog drivers; - Xen hypervisor drivers; - 9P distributed file system; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - Journaling layer for block devices (JBD2); - Network file systems library; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NTFS3 file system; - OCFS2 file system; - Overlay file system; - Proc file system; - SMB network file system; - BPF subsystem; - File system encryption (fscrypt); - MAC80211 subs

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8888-1

USN-8888-1: Linux kernel (Azure) vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table (RMP) checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory. (CVE-2023-20585) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - NVDIMM (Non-Volatile Memory Device) drivers; - Handshake API; - ARM32 architecture; - MIPS architecture; - OpenRISC architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Cryptographic API; - Compute Acceleration Framework; - Intel NPU Driver; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Ublk userspace block driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - TPM device driver; - Data acquisition framework and drivers; - Hardware crypto device drivers; - CXL (Compute Express Link) drivers; - DAX dirext access to differentiated memory framework; - DIBS (Direct Internal Buffer Sharing) drivers; - Buffer Sharing and Synchronization framework; - DMA engine subsystem; - DPLL subsystem; - EDAC drivers; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIB drivers; - GPIO subsystem; - GPU drivers; - HID subsystem; - Microsoft Hyper-V drivers; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - I3C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device (Miscellaneous) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Mailbox framework; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Intel Management Engine Interface driver; - Amazon Nitro Secure Module driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - Ethernet bonding driver; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVME drivers; - Device tree and open firmware driver; - Operating Performance Points (OPP) driver; - PCI subsystem; - Pin controllers subsystem; - x86 platform drivers; - i.MX PM domains; - MediaTek PM domains; - Power supply drivers; - PTP clock framework; - RapidIO drivers; - Voltage and Current Regulator drivers; - Remote Processor subsystem; - MPAM driver; - Reset controller framework; - Real Time Clock drivers; - S/390 drivers; - SCSI subsystem; - Xilinx SoC drivers; - SoundWire subsystem; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - TTY drivers; - UFS subsystem; - USB DSL drivers; - USB core drivers; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB Dual Role (OTG-ready) Controller drivers; - USB Serial drivers; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Virtio drivers; - Watchdog drivers; - Xen hypervisor drivers; - 9P distributed file system; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - Journaling layer for block devices (JBD2); - Network file systems library; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - Overlay file system; - Proc file system; -

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8889-1

USN-8889-1: Linux kernel (OEM) vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table (RMP) checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory. (CVE-2023-20585) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - NVDIMM (Non-Volatile Memory Device) drivers; - Handshake API; - ARM32 architecture; - MIPS architecture; - OpenRISC architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Cryptographic API; - Compute Acceleration Framework; - Intel NPU Driver; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - Rados block device (RBD) driver; - Ublk userspace block driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - TPM device driver; - Data acquisition framework and drivers; - Hardware crypto device drivers; - CXL (Compute Express Link) drivers; - DAX dirext access to differentiated memory framework; - DIBS (Direct Internal Buffer Sharing) drivers; - Buffer Sharing and Synchronization framework; - DMA engine subsystem; - DPLL subsystem; - EDAC drivers; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIB drivers; - GPIO subsystem; - GPU drivers; - HID subsystem; - Microsoft Hyper-V drivers; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - I3C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device (Miscellaneous) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Mailbox framework; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Intel Management Engine Interface driver; - Amazon Nitro Secure Module driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - Ethernet bonding driver; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVME drivers; - Device tree and open firmware driver; - Operating Performance Points (OPP) driver; - PCI subsystem; - Pin controllers subsystem; - x86 platform drivers; - i.MX PM domains; - MediaTek PM domains; - Power supply drivers; - PTP clock framework; - RapidIO drivers; - Voltage and Current Regulator drivers; - Remote Processor subsystem; - MPAM driver; - Reset controller framework; - Real Time Clock drivers; - S/390 drivers; - SCSI subsystem; - Xilinx SoC drivers; - SoundWire subsystem; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TTY drivers; - UFS subsystem; - USB DSL drivers; - USB core drivers; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB Dual Role (OTG-ready) Controller drivers; - USB Serial drivers; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Virtio drivers; - Watchdog drivers; - Xen hypervisor drivers; - 9P distributed file system; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - Journaling layer for block devices (JBD2); - Network file systems library; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NTFS3 file system; - OCFS2 file system; - Overlay file system; - Proc file system; - SMB network file system; - BPF subsystem; - File system encryption (fscrypt); - MAC80211 subs

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8890-1

USN-8890-1: libsoup vulnerabilities

It was discovered that libsoup incorrectly handled certain HTTP/2 requests. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-4271) It was discovered that libsoup incorrectly handled certain HTTPS proxy connections. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-5119) It was discovered that libsoup incorrectly parsed certain chunked HTTP requests. A remote attacker could possibly use this issue to bypass security controls. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-6324) It was discovered that libsoup incorrectly handled proxy authentication credentials. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-66339) It was discovered that libsoup incorrectly handled certain HTTP Range headers. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-77014, CVE-2026-77680) It was discovered that libsoup incorrectly handled certain HTTP/2 connections. A remote attacker could possibly use this issue to obtain sensitive information or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-85197) It was discovered that libsoup incorrectly handled certain HTTP/2 transfers. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-85534)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8892-1

USN-8892-1: Ubuntu Pro for WSL vulnerability

Darshan U discovered that Ubuntu Pro for WSL exposed the attach token in command-line arguments when enabling a subscription on a WSL instance. An attacker could possibly use this issue to obtain sensitive information and gain unauthorized access to Ubuntu Pro repositories.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 7 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8880-1

USN-8880-1: FreeRDP vulnerabilities

It was discovered that FreeRDP contained multiple security issues. An attacker could possibly use these issues to obtain sensitive information, cause FreeRDP to crash, resulting in a denial of service, or execute arbitrary code.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8881-1

USN-8881-1: FreeType vulnerability

It was discovered that FreeType had a flaw in its CID font loader. An attacker could possibly use this issue to cause FreeType to consume excessive memory and CPU resources, leading to a denial of service.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8874-1

USN-8874-1: sg3_utils vulnerability

Shaomin Chen discovered that sg3_utils did not properly sanitize device identification data. An attacker could possibly use this issue to execute arbitrary commands.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8869-1

USN-8869-1: RabbitMQ Server vulnerability

It was discovered that RabbitMQ Server incorrectly handled certain HTTP/2 headers. An attacker could possibly use this issue to cause a denial of service via memory exhaustion.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8870-1

USN-8870-1: OpenStack Aodh and Watcher vulnerability

Chen YuXiang discovered that OpenStack Aodh did not correctly enforce project scoping in its alarm list API and that the OpenStack Watcher webhook trigger endpoint did not apply authorization. An attacker could possibly use this issue to access sensitive alarm metadata or trigger unauthorized action plans.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8871-1

USN-8871-1: Linux kernel (Raspberry Pi) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8872-1

USN-8872-1: libxmltok vulnerabilities

It was discovered that Expat, contained with the xmltok library did not correctly handle certain integer arithmetic. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly cause a denial of service. (CVE-2026-56404, CVE-2026-56405)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8873-1

USN-8873-1: Unbound vulnerabilities

Yuqi Qiu and Xiang Li discovered that Unbound did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-81642) Ben Morris discovered that Unbound did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service or execute arbitary code. (CVE-2026-82717)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8875-1

USN-8875-1: Linux kernel vulnerabilities

It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3114) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - User-space API (UAPI); - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - Hardware random number generator core; - TPM device driver; - Data acquisition framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - DAX dirext access to differentiated memory framework; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device core drivers; - Input Device (Miscellaneous) drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Fastrpc Driver; - MMC subsystem; - MTD block device drivers; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVDIMM (Non-Volatile Memory Device) drivers; - NVME drivers; - Parport drivers; - PCI subsystem; - Pin controllers subsystem; - Generic PM domains; - System reset/shutdown drivers; - Power supply drivers; - RapidIO drivers; - Voltage and Current Regulator drivers; - Reset controller framework; - S/390 drivers; - SCSI subsystem; - SLIMbus drivers; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thermal drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - USB DSL drivers; - Cadence USB3 driver; - USB Device Class drivers; - ULPI bus; - DesignWare USB2 driver; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB ChaosKey driver; - Siemens ID Mouse USB driver; - IOWarrior USB driver; - LD Didactic USB driver; - LEGO USB Tower driver; - USS720 USB parallel port adapter driver; - MediaTek USB3 DRD driver; - USB Serial drivers; - USB Type-C support driver; - USB Type-C Port Controller Manager driver; - USB Type-C Connector System Software Interface driver; - USB over IP driver; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Watchdog drivers; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EROFS file system; - exFAT file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - HFS file system; - HFS+ file system; - Journaling layer for block devices (JBD2); - Network file system (NFS) client; - Network file system (NFS) server daemon; - NILFS2 file system; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - Proc file system; - SMB network file system; - UDF file system; - XFS file syste

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8876-1

USN-8876-1: Linux kernel (Azure CVM) vulnerabilities

It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3114) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - Hardware random number generator core; - TPM device driver; - Data acquisition framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - DAX dirext access to differentiated memory framework; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - Intel Stratix 10 firmware drivers; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device core drivers; - Input Device (Miscellaneous) drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Fastrpc Driver; - MTD block device drivers; - Network drivers; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVDIMM (Non-Volatile Memory Device) drivers; - NVME drivers; - PCI subsystem; - Pin controllers subsystem; - Generic PM domains; - Power supply drivers; - Voltage and Current Regulator drivers; - Reset controller framework; - S/390 drivers; - SCSI subsystem; - SLIMbus drivers; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thermal drivers; - Thunderbolt and USB4 drivers; - USB DSL drivers; - Cadence USB3 driver; - ULPI bus; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB ChaosKey driver; - Siemens ID Mouse USB driver; - IOWarrior USB driver; - LD Didactic USB driver; - LEGO USB Tower driver; - USS720 USB parallel port adapter driver; - MediaTek USB3 DRD driver; - USB Serial drivers; - USB Type-C Port Controller Manager driver; - USB Type-C Connector System Software Interface driver; - USB over IP driver; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Watchdog drivers; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EROFS file system; - exFAT file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - HFS file system; - HFS+ file system; - Journaling layer for block devices (JBD2); - Network file system (NFS) client; - Network file system (NFS) server daemon; - NILFS2 file system; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - Proc file system; - SMB network file system; - UDF file system; - XFS file system; - Software nodes and device properties; - Glob pattern matching library; - Netfilter; - Socket messages infrastructure; - Network sockets; - Memory Management; - Network traffic control; - IPv6 networking; - Bluetooth subsystem; - Networking core; - IP tunnels definitions; - IPv4 n

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8877-1

USN-8877-1: Linux kernel (GCP) vulnerabilities

It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3114) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - User-space API (UAPI); - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - Hardware random number generator core; - TPM device driver; - Data acquisition framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - DAX dirext access to differentiated memory framework; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device core drivers; - Input Device (Miscellaneous) drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Fastrpc Driver; - MMC subsystem; - MTD block device drivers; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVDIMM (Non-Volatile Memory Device) drivers; - NVME drivers; - Parport drivers; - PCI subsystem; - Pin controllers subsystem; - Generic PM domains; - System reset/shutdown drivers; - Power supply drivers; - RapidIO drivers; - Voltage and Current Regulator drivers; - Reset controller framework; - S/390 drivers; - SCSI subsystem; - SLIMbus drivers; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thermal drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - USB DSL drivers; - Cadence USB3 driver; - USB Device Class drivers; - ULPI bus; - DesignWare USB2 driver; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB ChaosKey driver; - Siemens ID Mouse USB driver; - IOWarrior USB driver; - LD Didactic USB driver; - LEGO USB Tower driver; - USS720 USB parallel port adapter driver; - MediaTek USB3 DRD driver; - USB Serial drivers; - USB Type-C support driver; - USB Type-C Port Controller Manager driver; - USB Type-C Connector System Software Interface driver; - USB over IP driver; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Watchdog drivers; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EROFS file system; - exFAT file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - HFS file system; - HFS+ file system; - Journaling layer for block devices (JBD2); - Network file system (NFS) client; - Network file system (NFS) server daemon; - NILFS2 file system; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - Proc file system; - SMB network file system; - UDF file system; - XFS file syste

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8878-1

USN-8878-1: Linux kernel (GCP) vulnerabilities

It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3114) It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - User-space API (UAPI); - ARM32 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - Hardware random number generator core; - TPM device driver; - Data acquisition framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - DAX dirext access to differentiated memory framework; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device core drivers; - Input Device (Miscellaneous) drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Fastrpc Driver; - MMC subsystem; - MTD block device drivers; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVDIMM (Non-Volatile Memory Device) drivers; - NVME drivers; - Parport drivers; - PCI subsystem; - Pin controllers subsystem; - Generic PM domains; - System reset/shutdown drivers; - Power supply drivers; - RapidIO drivers; - Voltage and Current Regulator drivers; - Reset controller framework; - S/390 drivers; - SCSI subsystem; - SLIMbus drivers; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thermal drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - USB DSL drivers; - Cadence USB3 driver; - USB Device Class drivers; - ULPI bus; - DesignWare USB2 driver; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB ChaosKey driver; - Siemens ID Mouse USB driver; - IOWarrior USB driver; - LD Didactic USB driver; - LEGO USB Tower driver; - USS720 USB parallel port adapter driver; - MediaTek USB3 DRD driver; - USB Serial drivers; - USB Type-C support driver; - USB Type-C Port Controller Manager driver; - USB Type-C Connector System Software Interface driver; - USB over IP driver; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Watchdog drivers; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EROFS file system; - exFAT file system; - Ext4 file system; - F2FS f

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8879-1

USN-8879-1: Linux kernel (Oracle) vulnerabilities

It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3114) It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - User-space API (UAPI); - ARM32 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Android drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Cdrom driver; - Character device driver; - Hardware random number generator core; - TPM device driver; - Data acquisition framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - DAX dirext access to differentiated memory framework; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - Intel Stratix 10 firmware drivers; - FPGA Framework; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - Intel Trace Hub HW tracing drivers; - I2C subsystem; - IIO subsystem; - IIO ADC drivers; - IIO Magnetometer sensors drivers; - InfiniBand drivers; - Input Device core drivers; - Input Device (Miscellaneous) drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - IRQ chip drivers; - LED subsystem; - Multiple devices driver; - Media drivers; - MemoryStick subsystem; - Multifunction device drivers; - Fastrpc Driver; - MMC subsystem; - MTD block device drivers; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVDIMM (Non-Volatile Memory Device) drivers; - NVME drivers; - Parport drivers; - PCI subsystem; - Pin controllers subsystem; - Generic PM domains; - System reset/shutdown drivers; - Power supply drivers; - RapidIO drivers; - Voltage and Current Regulator drivers; - Reset controller framework; - S/390 drivers; - SCSI subsystem; - SLIMbus drivers; - SPI subsystem; - Media staging drivers; - Media Oriented Systems Transport (MOST) driver; - NVIDIA Tegra embedded controller (NVEC) staging driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thermal drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - USB DSL drivers; - Cadence USB3 driver; - USB Device Class drivers; - ULPI bus; - DesignWare USB2 driver; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - USB ChaosKey driver; - Siemens ID Mouse USB driver; - IOWarrior USB driver; - LD Didactic USB driver; - LEGO USB Tower driver; - USS720 USB parallel port adapter driver; - MediaTek USB3 DRD driver; - USB Serial drivers; - USB Type-C support driver; - USB Type-C Port Controller Manager driver; - USB Type-C Connector System Software Interface driver; - USB over IP driver; - vDPA drivers; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Framebuffer layer; - Watchdog drivers; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EROFS file system; - exFAT file system; - Ext4 file system; - F2FS f

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8816-4

USN-8816-4: Linux kernel (GKE) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Block Device drivers; - InfiniBand drivers; - IOMMU subsystem; - Multiple devices driver; - Network drivers; - Microsoft Azure Network Adapter (MANA) driver; - NVME drivers; - TCM subsystem; - Virtio Host (VHOST) subsystem; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - Network file systems library; - Network file system (NFS) client; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - SMB network file system; - IPv4 networking; - Sun RPC protocol; - IPv6 networking; - IP tunnels definitions; - Netfilter; - TCP network protocol; - Locking primitives; - 9P file system network protocol; - B.A.T.M.A.N. meshing protocol; - Networking core; - IFE protocol; - RxRPC session sockets; - Network traffic control; - SCTP protocol; - SMC sockets; - TIPC protocol; - XFRM subsystem; (CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541, CVE-2026-64551, CVE-2026-68083, CVE-2026-68457, CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020, CVE-2026-72033, CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065, CVE-2026-72069, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085, CVE-2026-72098, CVE-2026-72129, CVE-2026-72130, CVE-2026-72137, CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72217, CVE-2026-72220, CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72248, CVE-2026-72249, CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279, CVE-2026-72287, CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318, CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339, CVE-2026-72348, CVE-2026-72351, CVE-2026-72355, CVE-2026-72366, CVE-2026-72381, CVE-2026-72393, CVE-2026-72398, CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422, CVE-2026-72429, CVE-2026-72436, CVE-2026-72442, CVE-2026-72451, CVE-2026-72463, CVE-2026-72466, CVE-2026-72472, CVE-2026-72473, CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494, CVE-2026-72495, CVE-2026-72496, CVE-2026-72501, CVE-2026-74255, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269, CVE-2026-74287, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361, CVE-2026-74376, CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74406, CVE-2026-74427, CVE-2026-74428, CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439, CVE-2026-80665)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8851-3

USN-8851-3: Linux kernel (Azure) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8864-1

USN-8864-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8865-1

USN-8865-1: EDK II vulnerabilities

It was discovered that EDK II incorrectly handled CMS key unwrapping in the embedded OpenSSL library. An attacker could possibly use this issue to cause a heap buffer overflow, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-63072) It was discovered that EDK II incorrectly handled CMP protection verification in the embedded OpenSSL library. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-63076) It was discovered that EDK II incorrectly buffered DTLS records in the embedded OpenSSL library. A remote attacker could possibly use this issue to cause EDK II to consume excessive memory, resulting in a denial of service. (CVE-2026-54874) It was discovered that EDK II incorrectly verified AEAD tags in the embedded OpenSSL library. An attacker could possibly use this issue to cause EDK II to accept forged messages. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-75803)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8867-1

USN-8867-1: Ceph vulnerability

It was discovered that the Ceph Object Gateway (RGW) SigV4 handler did not reject requests carrying x-amz-* headers that were absent from the signed header set. An attacker holding a presigned URL could possibly use this issue to attach arbitrary unsigned x-amz-* headers that RGW would honor, allowing them to escalate their privileges beyond what the URL's signer intended.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8868-1

USN-8868-1: LibreOffice vulnerabilities

It was discovered that LibreOffice incorrectly handled WMF image imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63272) It was discovered that LibreOffice incorrectly handled PDF document imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63273, CVE-2026-63274) It was discovered that LibreOffice incorrectly handled CFF fonts embedded in documents. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63275, CVE-2026-63276) It was discovered that LibreOffice incorrectly validated package URLs. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-63278) It was discovered that LibreOffice incorrectly handled PICT image imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or obtain sensitive information. (CVE-2026-63279) It was discovered that LibreOffice incorrectly mitigated out-of-bounds writes via Graphite font actions. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-50593)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8818-6

USN-8818-6: Linux kernel (FIPS) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8851-2

USN-8851-2: Linux kernel (Raspberry Pi) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 6 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8863-1

USN-8863-1: GStreamer Good Plugins vulnerabilities

Yazan Balawneh discovered that GStreamer Good Plugins incorrectly handled certain FLAC audio streams. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-17072) Seonwook Kim discovered that GStreamer Good Plugins incorrectly parsed certain AVI files. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-73433) Seonwook Kim discovered that GStreamer Good Plugins did not correctly parse certain AVI files. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-73434) Seonwook Kim discovered that GStreamer Good Plugins incorrectly handled certain closed caption data. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-88914)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 5 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8857-1

USN-8857-1: KCoreAddons vulnerability

It was discovered that KCoreAddons incorrectly handled shell argument quoting in KShell::quoteArgs. The parsing did not adequately handle shell metacharacters, which could lead to a shell escape. An attacker could possibly use this issue to execute arbitrary commands in applications that relied on this method to handle user input.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 5 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8860-1

USN-8860-1: OpenStack Designate vulnerability

It was discovered that OpenStack Designate did not properly validate overlapping zones under certain circumstances. An authenticated user could possibly use this issue to redirect DNS traffic to attacker-controlled systems or cause a denial of service.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 5 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8861-1

USN-8861-1: OpenSSL vulnerabilities

It was discovered that OpenSSL had an inefficient algorithm in its QUIC stream reassembly implementation. A remote attacker could possibly use this issue to cause OpenSSL to use excessive CPU resources, leading to a denial of service. (CVE-2026-42772) It was discovered that OpenSSL did not properly limit memory allocated for QUIC packet buffers. A remote attacker could possibly use this issue to cause OpenSSL to use excessive memory resources, leading to a denial of service. (CVE-2026-54873)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 5 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8862-1

USN-8862-1: libXpm vulnerability

It was discovered that libXpm did not correctly handle XPM images with zero-dimension values. A local attacker could possibly use this issue to cause libXpm to use excessive resources, leading to a denial of service.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 5 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8858-1

USN-8858-1: Authen::SASL vulnerability

It was discovered that Authen::SASL, a Perl authentication library, did not properly validate login attempts. An attacker could possibly use this issue to gain unauthorized access.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 5 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8845-1

USN-8845-1: GVfs vulnerabilities

Keith Linneman discovered that GVfs did not properly validate data received from SFTP servers. An attacker could possibly use this issue to cause a heap buffer overflow, resulting in arbitrary code execution or a denial of service. (CVE-2026-84268) It was discovered that GVfs incorrectly handled file ownership when creating private D-Bus sockets in the admin backend. A local attacker could possibly use this issue to change the ownership of arbitrary system files, resulting in privilege escalation to root. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-88924)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 2 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8855-1

USN-8855-1: GStreamer Bad Plugins vulnerability

It was discovered that GStreamer Bad Plugins incorrectly validated the size of multi-channel audio blocks. An attacker could possibly use this issue with a specially crafted WAV file to cause the program to crash, resulting in a denial of service, or possibly execute arbitrary code.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 2 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8856-1

USN-8856-1: Kdenlive, MLT vulnerability

It was discovered that Kdenlive allowed dangerous proxy parameters when processing attacker-controlled project files. An attacker could use this to execute arbitrary commands via the MLT framework's ante/post consumer properties.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 2 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8859-1

USN-8859-1: ImageMagick vulnerabilities

It was discovered that ImageMagick did not correctly handle certain images. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-56367) It was discovered that ImageMagick did not correctly handle certain images. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-93586) It was discovered that ImageMagick did not correctly handle certain images. A local attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-93587, CVE-2026-93588) It was discovered that ImageMagick did not correctly handle certain images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-93589) It was discovered that ImageMagick did not correctly handle certain images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-93590)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 2 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8816-3

USN-8816-3: Linux kernel (Oracle) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Block Device drivers; - InfiniBand drivers; - IOMMU subsystem; - Multiple devices driver; - Network drivers; - Microsoft Azure Network Adapter (MANA) driver; - NVME drivers; - TCM subsystem; - Virtio Host (VHOST) subsystem; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - Network file systems library; - Network file system (NFS) client; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - SMB network file system; - IPv4 networking; - Sun RPC protocol; - IPv6 networking; - IP tunnels definitions; - Netfilter; - TCP network protocol; - Locking primitives; - 9P file system network protocol; - B.A.T.M.A.N. meshing protocol; - Networking core; - IFE protocol; - RxRPC session sockets; - Network traffic control; - SCTP protocol; - SMC sockets; - TIPC protocol; - XFRM subsystem; (CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541, CVE-2026-64551, CVE-2026-68083, CVE-2026-68457, CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020, CVE-2026-72033, CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065, CVE-2026-72069, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085, CVE-2026-72098, CVE-2026-72129, CVE-2026-72130, CVE-2026-72137, CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72217, CVE-2026-72220, CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72248, CVE-2026-72249, CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279, CVE-2026-72287, CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318, CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339, CVE-2026-72348, CVE-2026-72351, CVE-2026-72355, CVE-2026-72366, CVE-2026-72381, CVE-2026-72393, CVE-2026-72398, CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422, CVE-2026-72429, CVE-2026-72436, CVE-2026-72442, CVE-2026-72451, CVE-2026-72463, CVE-2026-72466, CVE-2026-72472, CVE-2026-72473, CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494, CVE-2026-72495, CVE-2026-72496, CVE-2026-72501, CVE-2026-74255, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269, CVE-2026-74287, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361, CVE-2026-74376, CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74406, CVE-2026-74427, CVE-2026-74428, CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439, CVE-2026-80665)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 1 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8817-3

USN-8817-3: Linux kernel (AWS) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - B.A.T.M.A.N. meshing protocol; - HSR network protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 1 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8818-5

USN-8818-5: Linux kernel (NVIDIA Tegra) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 1 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8854-1

USN-8854-1: OpenStack Keystone vulnerabilities

Grzegorz Grasza discovered that OpenStack Keystone did not consistently enforce restrictions for delegated authentication tokens. An authenticated attacker could possibly use this issue to create credentials or delegations that outlasted the delegated token. (CVE-2026-80182) It was discovered that OpenStack Keystone incorrectly handled role assignment queries under certain circumstances. An authenticated attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-80183) Tim Shephard discovered that OpenStack Keystone did not properly restrict reauthentication using delegated tokens. An authenticated attacker could possibly use this issue to escape their intended project scope and obtain unauthorized access. (CVE-2026-80184)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 1 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8853-1

USN-8853-1: OpenSBI vulnerability

It was discovered that OpenSBI did not properly validate the counter index mask in SBI PMU extension requests. An attacker could use this issue to cause a denial of service.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 1 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8852-1

USN-8852-1: OpenVPN vulnerabilities

It was discovered that OpenVPN had a use-after-free vulnerability in its TLS session handling. An attacker could possibly use this issue to cause OpenVPN to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-84471) It was discovered that OpenVPN incorrectly handled retransmissions of ACK packet IDs, which could trigger a timeout integer overflow. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-84732)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 1 Oct 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8851-1

USN-8851-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8849-1

USN-8849-1: Linux kernel (NVIDIA Tegra) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8850-1

USN-8850-1: Linux kernel (BlueField) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - OCFS2 file system; - IPv6 networking; - Netfilter; - SCTP protocol; (CVE-2025-38724, CVE-2026-53043, CVE-2026-53131, CVE-2026-53221, CVE-2026-53224, CVE-2026-53225, CVE-2026-53246, CVE-2026-53309)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8730-7

USN-8730-7: Linux kernel (FIPS) vulnerability

A security issue was discovered in the Linux kernel. An attacker could possibly use this to compromise the system. This update corrects flaws in the following subsystems: - IPv6 networking; - Netfilter;

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8817-2

USN-8817-2: Linux kernel (AWS FIPS) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - B.A.T.M.A.N. meshing protocol; - HSR network protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8818-4

USN-8818-4: Linux kernel vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8819-4

USN-8819-4: Linux kernel (FIPS) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8846-1

USN-8846-1: libheif vulnerabilities

Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain compressed metadata. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84384) Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain HEIF sequence data. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84446) Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain image references. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84447) It was discovered that libheif incorrectly handled certain region masks. A local attacker could possibly use this issue to obtain sensitive information or cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84448) It was discovered that libheif incorrectly handled certain images. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-84449)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8847-1

USN-8847-1: OpenSSL vulnerabilities

It was discovered that OpenSSL incorrectly handled certain certificate revocation list distribution point names. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. (CVE-2026-35189) It was discovered that OpenSSL incorrectly handled QUIC unvalidated amplification credit accounting. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-35191) It was discovered that OpenSSL incorrectly implemented scalar multiplication for non-NIST elliptic curves. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. (CVE-2026-54872) It was discovered that OpenSSL incorrectly implemented SM2 scalar multiplication on ARM64 and RISC-V architectures. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-54875) It was discovered that OpenSSL incorrectly handled SSL context switching during a TLS handshake. An attacker could possibly use this issue to cause an out-of-bounds read, resulting in a denial of service or obtaining sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-72897) It was discovered that OpenSSL incorrectly enforced QUIC connection- level flow control for streams. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-75804) It was discovered that OpenSSL incorrectly handled a NULL pointer in CMP client revocation response processing. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-75805) It was discovered that OpenSSL incorrectly handled undersized DTLS 1.2 AEAD records before authentication. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-75806) It was discovered that OpenSSL incorrectly implemented SM2 signature generation. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. (CVE-2026-77696) It was discovered that OpenSSL incorrectly handled DTLS retransmission of handshake messages. An attacker could possibly use this issue to cause incorrect handshake behavior or a denial of service. (CVE-2026-84782) It was discovered that OpenSSL incorrectly handled QUIC RETIRE_CONNECTION_ID frames. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84784)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8847-2

USN-8847-2: OpenSSL vulnerabilities

USN-8847-1 fixed vulnerabilities in OpenSSL. This update provides the corresponding fix for OpenSSL on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Original advisory details: It was discovered that OpenSSL incorrectly handled certain certificate revocation list distribution point names. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. (CVE-2026-35189) It was discovered that OpenSSL incorrectly implemented scalar multiplication for non-NIST elliptic curves. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-54872) It was discovered that OpenSSL incorrectly implemented SM2 signature generation. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-77696) It was discovered that OpenSSL incorrectly handled DTLS retransmission of handshake messages. An attacker could possibly use this issue to cause incorrect handshake behavior or a denial of service. (CVE-2026-84782)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8818-3

USN-8818-3: Linux kernel vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8819-3

USN-8819-3: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8842-1

USN-8842-1: Linux kernel (NVIDIA) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - InfiniBand drivers; - Network drivers; - TCM subsystem; - B.A.T.M.A.N. meshing protocol; - HSR network protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8843-1

USN-8843-1: FreeIPMI vulnerabilities

It was discovered that FreeIPMI incorrectly handled certain malformed Fujitsu SEL long-text responses, leading to a stack-based buffer overflow. An attacker in control of a malicious IPMI device could possibly use this issue to cause FreeIPMI to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-85504) It was discovered that FreeIPMI incorrectly handled short responses when retrieving Fujitsu SEL entries, leading to a stack-based buffer over-read. An attacker in control of a malicious IPMI device could possibly use this issue to cause FreeIPMI to crash, resulting in a denial of service. (CVE-2026-85505) It was discovered that FreeIPMI incorrectly handled certain Dell iDRAC and CMC IPv6 system information responses, leading to a stack-based buffer overflow. An attacker in control of a malicious IPMI device could possibly use this issue to cause FreeIPMI to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-85506, CVE-2026-85508) It was discovered that FreeIPMI incorrectly handled certain Dell CMC system information responses, leading to a stack-based buffer overflow. An attacker in control of a malicious IPMI device could possibly use this issue to cause FreeIPMI to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-85507) It was discovered that FreeIPMI incorrectly handled FRU data responses that were larger than requested, leading to a stack-based buffer overflow. An attacker in control of a malicious IPMI device could possibly use this issue to cause FreeIPMI to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-85509)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8844-1

USN-8844-1: c-ares vulnerability

It was discovered that c-ares incorrectly handled certain query completion callbacks. An attacker could possibly use this issue to trigger a use- after-free or double-free, resulting in a denial of service or arbitrary code execution.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8728-3

USN-8728-3: Linux kernel (Oracle) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. (CVE-2025-54518) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - x86 platform drivers; - ARM64 architecture; - Cryptographic API; - PSP security protocol; - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Compute Acceleration Framework; - Intel NPU Driver; - ACPI drivers; - Android drivers; - Auxiliary display drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Ublk userspace block driver; - Compressed RAM block device driver; - Bluetooth drivers; - Bus devices; - Character device driver; - Hardware random number generator core; - Clock framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - Buffer Sharing and Synchronization framework; - DPLL subsystem; - EDAC drivers; - Arm Firmware Framework for ARMv8-A(FFA); - EFI core; - Intel Stratix 10 firmware drivers; - FPGA Framework; - FWCTL subsystem; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - I2C subsystem; - I3C subsystem; - IIO subsystem; - IIO ADC drivers; - InfiniBand drivers; - Input Device core drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - IRQ chip drivers; - Mailbox framework; - Multiple devices driver; - Media drivers; - NVIDIA Tegra memory controller driver; - Multifunction device drivers; - Fastrpc Driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - Ethernet bonding driver; - Mellanox network drivers; - Microsoft Azure Network Adapter (MANA) driver; - STMicroelectronics network drivers; - Texas Instruments network drivers; - MediaTek network drivers; - NTB driver; - NVME drivers; - NVMEM (Non Volatile Memory) drivers; - Parport drivers; - PCI subsystem; - PHY drivers; - Pin controllers subsystem; - Chrome hardware platform drivers; - ACPI WMI driver; - Generic PM domains; - MediaTek PM domains; - System reset/shutdown drivers; - Power sequencing drivers; - Power supply drivers; - PTP clock framework; - Voltage and Current Regulator drivers; - MPAM driver; - Amlogic Meson reset controller drivers; - RPMSG subsystem; - S/390 drivers; - SCSI subsystem; - SLIMbus drivers; - NVIDIA Tegra Control Backbone (CBB) driver; - SPI subsystem; - Greybus lights staging drivers; - Media staging drivers; - Realtek RTL8723BS SDIO drivers; - VME bus staging drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - Userspace I/O drivers; - Cadence USB3 driver; - USB Device Class drivers; - ULPI bus; - DesignWare USB2 driver; - DesignWare USB3 driver; - Faraday FOTG210 USB2 dual-role controller driver; - USB Gadget drivers; - USB Host Controller drivers; - USB ChaosKey driver; - Siemens ID Mouse USB driver; - IOWarrior USB driver; - LD Didactic USB driver; - LEGO USB Tower driver; - Intel USBIO USB I/O expander driver; - USS720 USB parallel port adapter driver; - MediaTek USB3 DRD driver; - USB Dual Role (OTG-ready) Controller drivers; - USB Serial drivers; - USB Type-C support driver; - USB T

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8729-6

USN-8729-6: Linux kernel (AWS) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - PowerPC architecture; - Compute Acceleration Framework; - Drivers core; - Bluetooth drivers; - Arm Firmware Framework for ARMv8-A(FFA); - EFI core; - GPU drivers; - Hardware monitoring drivers; - InfiniBand drivers; - Network drivers; - Microsoft Azure Network Adapter (MANA) driver; - SCSI subsystem; - SPI subsystem; - Network file systems library; - NTFS3 file system; - SMB network file system; - File systems infrastructure; - Software nodes and device properties; - Bluetooth subsystem; - Netfilter; - Tracing infrastructure; - io_uring subsystem; - IRQ subsystem; - KProbes tracing; - Memory management; - B.A.T.M.A.N. meshing protocol; - Ethernet bridge; - Networking core; - IPv4 networking; - IPv6 networking; - Multipath TCP; - Phonet protocol; - SMC sockets; - TLS protocol; - Unix domain sockets; - VMware vSockets driver; - Wireless networking; - Key management; - Linux Security Modules (LSM) Framework; - ALSA framework; - AudioScience HPI driver; (CVE-2025-71289, CVE-2026-23469, CVE-2026-31420, CVE-2026-31486, CVE-2026-31560, CVE-2026-46158, CVE-2026-46170, CVE-2026-46275, CVE-2026-46315, CVE-2026-52912, CVE-2026-52915, CVE-2026-52916, CVE-2026-52918, CVE-2026-52919, CVE-2026-52921, CVE-2026-52922, CVE-2026-52926, CVE-2026-52941, CVE-2026-53357, CVE-2026-64015, CVE-2026-64018, CVE-2026-64025, CVE-2026-64029, CVE-2026-64032, CVE-2026-64033, CVE-2026-64034, CVE-2026-64039, CVE-2026-64046, CVE-2026-64047, CVE-2026-64048, CVE-2026-64051, CVE-2026-64055, CVE-2026-64056, CVE-2026-64064, CVE-2026-64073, CVE-2026-64083, CVE-2026-64084, CVE-2026-64085, CVE-2026-64086, CVE-2026-64087, CVE-2026-64088, CVE-2026-64089, CVE-2026-64092, CVE-2026-64096, CVE-2026-64097, CVE-2026-64098, CVE-2026-64102, CVE-2026-64103, CVE-2026-64106, CVE-2026-64108, CVE-2026-64109, CVE-2026-64111, CVE-2026-64113, CVE-2026-64114, CVE-2026-64115, CVE-2026-64116, CVE-2026-64118, CVE-2026-64121, CVE-2026-64125, CVE-2026-64126, CVE-2026-64127, CVE-2026-64128, CVE-2026-64133, CVE-2026-64134, CVE-2026-64135, CVE-2026-64136, CVE-2026-64137, CVE-2026-64138, CVE-2026-64144, CVE-2026-64147, CVE-2026-64148, CVE-2026-64153, CVE-2026-64155, CVE-2026-64163, CVE-2026-64165, CVE-2026-64166, CVE-2026-64168, CVE-2026-64170, CVE-2026-64173, CVE-2026-64174, CVE-2026-64177, CVE-2026-64178, CVE-2026-64179, CVE-2026-64180, CVE-2026-64182, CVE-2026-64183, CVE-2026-64184, CVE-2026-64185, CVE-2026-64214, CVE-2026-64217, CVE-2026-64218, CVE-2026-64219, CVE-2026-64220, CVE-2026-64221, CVE-2026-64225, CVE-2026-64231, CVE-2026-64518)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8816-2

USN-8816-2: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Block Device drivers; - InfiniBand drivers; - IOMMU subsystem; - Multiple devices driver; - Network drivers; - Microsoft Azure Network Adapter (MANA) driver; - NVME drivers; - TCM subsystem; - Virtio Host (VHOST) subsystem; - Xen hypervisor drivers; - AFS file system; - File systems infrastructure; - Network file systems library; - Network file system (NFS) client; - NTFS3 file system; - OCFS2 file system; - OrangeFS file system; - SMB network file system; - IPv4 networking; - Sun RPC protocol; - IPv6 networking; - IP tunnels definitions; - Netfilter; - TCP network protocol; - Locking primitives; - 9P file system network protocol; - B.A.T.M.A.N. meshing protocol; - Networking core; - IFE protocol; - RxRPC session sockets; - Network traffic control; - SCTP protocol; - SMC sockets; - TIPC protocol; - XFRM subsystem; (CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541, CVE-2026-64551, CVE-2026-68083, CVE-2026-68457, CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020, CVE-2026-72033, CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065, CVE-2026-72069, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085, CVE-2026-72098, CVE-2026-72129, CVE-2026-72130, CVE-2026-72137, CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72217, CVE-2026-72220, CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72248, CVE-2026-72249, CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279, CVE-2026-72287, CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318, CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339, CVE-2026-72348, CVE-2026-72351, CVE-2026-72355, CVE-2026-72366, CVE-2026-72381, CVE-2026-72393, CVE-2026-72398, CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422, CVE-2026-72429, CVE-2026-72436, CVE-2026-72442, CVE-2026-72451, CVE-2026-72463, CVE-2026-72466, CVE-2026-72472, CVE-2026-72473, CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494, CVE-2026-72495, CVE-2026-72496, CVE-2026-72501, CVE-2026-74255, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269, CVE-2026-74287, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361, CVE-2026-74376, CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74406, CVE-2026-74427, CVE-2026-74428, CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439, CVE-2026-80665)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 30 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8487-2

USN-8487-2: curl regression

USN-8487-1 fixed vulnerabilities in curl. Unfortunately that update contained an incomplete fix for CVE-2026-8927. This update fixes the problem. Original advisory details: Andrew Nesbitt discovered that curl could reuse an existing live connection during STARTTLS-based connection upgrades even when the TLS configuration did not match. A remote attacker could possibly use this issue to cause curl to use an unintended TLS configuration. (CVE-2026-8286) Muhamad Arga Reksapati discovered that curl incorrectly reused connections for Negotiate-authenticated requests when different services were involved. A remote attacker could possibly use this issue to access resources authenticated for another service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-8458) It was discovered that curl incorrectly handled cookie parsing in certain circumstances. A remote attacker could possibly use this issue to set cookies that would be transmitted to unrelated third-party domains. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-8924) Joshua Rogers discovered that curl could double-free a GSASL context when handling SASL authentication. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-8925) Joshua Rogers discovered that curl could select the wrong password from a .netrc file when a username was specified in the URL without a password. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-8926) Ady Elouej discovered that curl did not clear proxy authentication state between requests when reusing a handle with environment-variable proxy configuration. A remote attacker could possibly use this issue to obtain sensitive credentials. (CVE-2026-8927) Guannan Wang, Zhanpeng Liu, Jiashuo Liang, and Guancheng Li discovered that curl did not properly clear proxy authentication credentials when instructed to do so. A remote attacker could possibly use this issue to obtain sensitive credentials. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-9079) Joshua Rogers discovered that curl contained a use-after-free when curl_easy_pause() was called within the event-based socket callback. A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-9080) Eunsoo Kim discovered that curl could send early data on a resumed TLS session before enforcing certificate verification failure. A machine-in- the-middle attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-9545) Joshua Rogers discovered that curl did not properly reject host key type mismatches when using the SSH key callback for SCP and SFTP transfers. A machine-in-the-middle attacker could possibly use this issue to impersonate a trusted server. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-9547)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8840-1

USN-8840-1: libevent vulnerabilities

Michał Majchrowicz and Marcin Wyczechowski discovered that libevent incorrectly handled certain DNS responses. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-63387) It was discovered that libevent incorrectly handled certain connections. A local attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-63388)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8837-1

USN-8837-1: pdfminer vulnerabilities

It was discovered that pdfminer did not safely parse specially crafted PDF files. An attacker could possibly use these issues to execute arbitrary code. (CVE-2025-64512, CVE-2025-70559)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8838-1

USN-8838-1: catdoc vulnerabilities

It was discovered that catdoc had an integer overflow when processing shared string tables in malformed spreadsheet files. An attacker could possibly use this issue to cause catdoc to crash or execute arbitrary code. (CVE-2024-48877) It was discovered that catdoc had an integer overflow when processing file allocation tables in malformed document files. An attacker could possibly use this issue to cause catdoc to crash or execute arbitrary code. (CVE-2024-52035) It was discovered that catdoc incorrectly validated sector sizes when processing malformed document files, leading to an integer underflow. An attacker could possibly use this issue to cause catdoc to crash or execute arbitrary code. (CVE-2024-54028)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8839-1

USN-8839-1: Atril vulnerabilities

It was discovered that Atril did not properly sanitize command-line arguments in PDF /GoToR actions. If a user opened a specially crafted PDF file, an attacker could possibly use this issue to execute arbitrary code. (CVE-2026-46529) It was discovered that Atril incorrectly handled certain PDF files. An attacker could possibly use this issue to cause a denial of service or to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2019-1010006) Andy Nguyen discovered that Atril incorrectly handled certain images. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 16.04 LTS. (CVE-2019-11459)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8832-1

USN-8832-1: Booth vulnerability

It was discovered that Booth did not properly validate message authentication codes under certain circumstances. A remote attacker could possibly use this issue to bypass authentication.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8835-1

USN-8835-1: Emacs vulnerability

It was discovered that Emacs improperly handled specially crafted SVG images, resulting in memory corruption. An attacker could possibly use this issue to cause Emacs to crash, resulting in a denial of service, or obtain sensitive information.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8827-1

USN-8827-1: Erlang vulnerabilities

It was discovered that the Erlang Port Mapper Daemon did not properly handle slow connections. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-42792) It was discovered that Erlang incorrectly handled certain external term format data, leading to heap corruption. An attacker could possibly use this issue to cause Erlang to crash, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-55737) It was discovered that Erlang incorrectly handled invalid external term format data. An attacker could possibly use this issue to cause Erlang to crash, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-54890) It was discovered that Erlang incorrectly handled certain packet lengths, leading to a buffer overflow. A remote attacker could possibly use this issue to cause Erlang to crash or execute arbitrary code. (CVE-2026-75538) It was discovered that the Erlang Megaco flex scanner incorrectly handled certain input, leading to a buffer overflow. A remote attacker could possibly use this issue to cause Erlang to crash or execute arbitrary code. (CVE-2026-59250) It was discovered that Erlang TLS clients incorrectly accepted cipher suites that they had not offered. A remote attacker could possibly use this issue to intercept and modify TLS communications. (CVE-2026-55953) It was discovered that Erlang incorrectly handled certain certificate chains. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-58227) It was discovered that Erlang incorrectly handled certain certificate policies. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-59251) It was discovered that the Erlang HTTP server incorrectly handled certain conflicting HTTP framing headers. A remote attacker could possibly use this issue to smuggle HTTP requests. (CVE-2026-23941, CVE-2026-73812) It was discovered that the Erlang HTTP server incorrectly handled certain malformed chunk sizes. A remote attacker could possibly use this issue to cause Erlang to crash, resulting in a denial of service. (CVE-2026-69664) It was discovered that the Erlang HTTP server did not properly limit the size of chunked request bodies. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. (CVE-2026-74835) It was discovered that the Erlang HTTP server incorrectly handled certain equivalent request paths and differences in character case. A remote attacker could possibly use this issue to bypass authentication and gain unauthorized access. (CVE-2026-66835, CVE-2026-73270) It was discovered that the Erlang HTTP server did not properly limit simultaneous connections. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-70399) It was discovered that the Erlang HTTP server incorrectly handled header continuation lines. A remote attacker could possibly use this issue to smuggle HTTP requests. (CVE-2026-66357) It was discovered that the Erlang HTTP server incorrectly handled certain malformed header names. A remote attacker could possibly use this issue to smuggle HTTP requests. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-73276) It was discovered that the Erlang HTTP server incorrectly handled incomplete request bodies. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. (CVE-2026-7138

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8828-1

USN-8828-1: dracut vulnerabilities

It was discovered that dracut created initramfs images with overly permissive permissions under certain circumstances. A local attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-8637) It was discovered that dracut did not properly sanitize DHCP options before writing them to shell scripts under certain circumstances. A remote attacker controlling a DHCP server on the local network could possibly use this issue to execute arbitrary code as root during system boot. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-6893) It was discovered that dracut did not properly quote error messages written to shell scripts under certain circumstances. A remote attacker controlling a DHCP server on the local network could possibly use this issue to execute arbitrary code as root during system boot. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-15816) It was discovered that dracut did not properly sanitize network configuration data before writing it to a temporary shell script under certain circumstances. A remote attacker controlling DHCP on the local network could possibly use this issue to execute arbitrary code as root during system boot. This issue only affected Ubuntu 22.04 LTS. (CVE-2026-16445)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8829-1

USN-8829-1: Plasma Workspace vulnerability

Fabian Vogt discovered that Plasma Workspace did not properly authenticate local clients connecting to the session manager. A local attacker could possibly use this issue to execute arbitrary code as another user.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8830-1

USN-8830-1: phpseclib vulnerabilities

It was discovered that phpseclib did not perform constant-time padding validation when using AES in CBC mode. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-32935) It was discovered that phpseclib did not use a constant-time comparison when validating SSH packet authentication codes. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-40194) It was discovered that phpseclib did not properly limit object identifier lengths when parsing ASN.1 data. An attacker could possibly use this issue to cause phpseclib to use excessive resources, leading to a denial of service. (CVE-2026-44167)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 29 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8836-1

USN-8836-1: FreeRDP vulnerabilities

It was discovered that FreeRDP contained multiple security issues. An attacker could possibly use these issues to obtain sensitive information, cause FreeRDP to crash, resulting in a denial of service, or execute arbitrary code.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8729-5

USN-8729-5: Linux kernel (AWS FIPS) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - PowerPC architecture; - Compute Acceleration Framework; - Drivers core; - Bluetooth drivers; - Arm Firmware Framework for ARMv8-A(FFA); - EFI core; - GPU drivers; - Hardware monitoring drivers; - InfiniBand drivers; - Network drivers; - Microsoft Azure Network Adapter (MANA) driver; - SCSI subsystem; - SPI subsystem; - Network file systems library; - NTFS3 file system; - SMB network file system; - File systems infrastructure; - Software nodes and device properties; - Bluetooth subsystem; - Netfilter; - Tracing infrastructure; - io_uring subsystem; - IRQ subsystem; - KProbes tracing; - Memory management; - B.A.T.M.A.N. meshing protocol; - Ethernet bridge; - Networking core; - IPv4 networking; - IPv6 networking; - Multipath TCP; - Phonet protocol; - SMC sockets; - TLS protocol; - Unix domain sockets; - VMware vSockets driver; - Wireless networking; - Key management; - Linux Security Modules (LSM) Framework; - ALSA framework; - AudioScience HPI driver; (CVE-2025-71289, CVE-2026-23469, CVE-2026-31420, CVE-2026-31486, CVE-2026-31560, CVE-2026-46158, CVE-2026-46170, CVE-2026-46275, CVE-2026-46315, CVE-2026-52912, CVE-2026-52915, CVE-2026-52916, CVE-2026-52918, CVE-2026-52919, CVE-2026-52921, CVE-2026-52922, CVE-2026-52926, CVE-2026-52941, CVE-2026-53357, CVE-2026-64015, CVE-2026-64018, CVE-2026-64025, CVE-2026-64029, CVE-2026-64032, CVE-2026-64033, CVE-2026-64034, CVE-2026-64039, CVE-2026-64046, CVE-2026-64047, CVE-2026-64048, CVE-2026-64051, CVE-2026-64055, CVE-2026-64056, CVE-2026-64064, CVE-2026-64073, CVE-2026-64083, CVE-2026-64084, CVE-2026-64085, CVE-2026-64086, CVE-2026-64087, CVE-2026-64088, CVE-2026-64089, CVE-2026-64092, CVE-2026-64096, CVE-2026-64097, CVE-2026-64098, CVE-2026-64102, CVE-2026-64103, CVE-2026-64106, CVE-2026-64108, CVE-2026-64109, CVE-2026-64111, CVE-2026-64113, CVE-2026-64114, CVE-2026-64115, CVE-2026-64116, CVE-2026-64118, CVE-2026-64121, CVE-2026-64125, CVE-2026-64126, CVE-2026-64127, CVE-2026-64128, CVE-2026-64133, CVE-2026-64134, CVE-2026-64135, CVE-2026-64136, CVE-2026-64137, CVE-2026-64138, CVE-2026-64144, CVE-2026-64147, CVE-2026-64148, CVE-2026-64153, CVE-2026-64155, CVE-2026-64163, CVE-2026-64165, CVE-2026-64166, CVE-2026-64168, CVE-2026-64170, CVE-2026-64173, CVE-2026-64174, CVE-2026-64177, CVE-2026-64178, CVE-2026-64179, CVE-2026-64180, CVE-2026-64182, CVE-2026-64183, CVE-2026-64184, CVE-2026-64185, CVE-2026-64214, CVE-2026-64217, CVE-2026-64218, CVE-2026-64219, CVE-2026-64220, CVE-2026-64221, CVE-2026-64225, CVE-2026-64231, CVE-2026-64518)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8730-6

USN-8730-6: Linux kernel (Intel IoTG) vulnerability

A security issue was discovered in the Linux kernel. An attacker could possibly use this to compromise the system. This update corrects flaws in the following subsystems: - IPv6 networking; - Netfilter;

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8818-2

USN-8818-2: Linux kernel (IBM) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8819-2

USN-8819-2: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8825-1

USN-8825-1: Requests vulnerability

It was discovered that Requests did not correctly handle generating random temporary file paths. An attacker could possibly use this issue to execute arbitrary code.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8826-1

USN-8826-1: LXC vulnerabilities

Maher Azzouzi discovered that LXC did not correctly handle logging certain failure messages. An attacker could possibly use this issue to leak sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2022-47952) Sam Sanoop discovered that LXC did not correctly handle certain forms of user authorization. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-39402)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8831-1

USN-8831-1: libvirt vulnerabilities

It was discovered that libvirt had an integer overflow vulnerability in the NodeGetFreePages RPC handler. A local attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-18917) It was discovered that libvirt did not correctly handle symbolic links when changing ownership of the TPM emulator log file. A local attacker with access to the swtpm account could possibly use this issue to cause libvirt to change the ownership of an arbitrary file. (CVE-2026-77159)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8833-1

USN-8833-1: libvirt vulnerabilities

It was discovered that libvirt did not properly validate newline characters in DNS TXT record values and SRV record attributes in its virtual network driver. A local attacker with permission to define virtual networks could possibly use this issue to inject arbitrary dnsmasq configuration directives, leading to arbitrary command execution as root. (CVE-2026-61477) It was discovered that libvirt did not properly handle errors during XML context parsing. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. (CVE-2026-61478) He Wei discovered that libvirt had a symlink-following vulnerability in the file ownership change function used for virtual TPM state directories. A local attacker running as the swtpm user could possibly use this issue to cause libvirt to change the ownership of an arbitrary file, leading to privilege escalation. (CVE-2026-63622) It was discovered that libvirt created storage volume images with overly permissive permissions during clone or convert operations. A local attacker could possibly use this issue to read guest disk contents, resulting in information disclosure. (CVE-2026-63623) It was discovered that libvirt had an integer overflow in the NodeGetFreePages RPC handler. A local attacker could possibly use this issue to cause libvirt to crash or execute arbitrary code. (CVE-2026-18917) It was discovered that libvirt had a symlink-following flaw in the virtual TPM emulator setup function. A local attacker with access to the swtpm account could possibly use this issue to cause libvirt to change the ownership of an arbitrary file, leading to privilege escalation. (CVE-2026-77159)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8834-1

USN-8834-1: Exim vulnerabilities

It was discovered that Exim had an out-of-bounds write when Proxy-Protocol was used with an attacker-controlled proxy. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-94054) It was discovered that Exim had a use-after-free when certain non-default TLS settings were used with GnuTLS. A remote attacker could possibly use this issue to cause Exim to crash, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-94055) It was discovered that Exim allowed attackers to read uninitialized data from stack memory when Proxy-Protocol was used with an attacker-controlled proxy. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-94056) It was discovered that Exim allowed SMTP smuggling via crafted data sent after a rejection during DATA processing. A remote attacker could possibly use this issue to inject arbitrary email messages. (CVE-2026-94057)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8820-1

USN-8820-1: curl vulnerabilities

Eunsoo Kim discovered that curl incorrectly handled SASL negotiation for LDAP authentication in certain circumstances. A machine-in-the-middle attacker could possibly use this issue to bypass peer validation. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-13608) Stephan Zeisberg discovered that curl incorrectly handled HTTP/2 Server Push streams when sharing connections between handles. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-18924) Stanislav Fort discovered that curl incorrectly managed the lifetime of pooled TLS connections when using the multi interface. An attacker could possibly use this issue to cause curl to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-80229) Stanislav Fort discovered that curl did not properly enforce public key pinning when certificate verification was disabled in certain circumstances. A remote attacker could possibly use this issue to bypass pinning checks and cause curl to accept connections that should have been rejected. (CVE-2026-80230) Stanislav Fort discovered that curl incorrectly handled the Secure attribute of cookies in certain circumstances. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-80255) Stanislav Fort discovered that curl did not properly enforce Public Suffix List boundaries when handling cookies in certain circumstances. A remote attacker could possibly use this issue to cause cookies to be sent to unrelated domains, resulting in sensitive information being exposed. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-82209) Ady Elouej discovered that curl did not clear proxy authentication state between requests when reusing a handle with environment-variable proxy configuration. A remote attacker could possibly use this issue to obtain sensitive credentials. This issue was previously fixed in USN-8487-1, but that fix was incomplete for Ubuntu 16.04 LTS. (CVE-2026-8927)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8822-1

USN-8822-1: Libwebsockets vulnerabilities

It was discovered that Libwebsockets incorrectly handled certain SSH protocol messages in its SSH protocol handler. A remote attacker could possibly use this issue to cause Libwebsockets to consume excessive resources, resulting in a denial of service. (CVE-2026-10650) It was discovered that Libwebsockets incorrectly handled certain malformed CBOR data. A remote attacker could possibly use this issue to cause Libwebsockets to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-78161)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8823-1

USN-8823-1: PyJWT vulnerabilities

It was discovered that PyJWT incorrectly handled certain URIs when using PyJWKClient. A remote attacker could possibly use this issue to perform server-side request forgery (SSRF) or expose sensitive local files. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48522) It was discovered that PyJWT incorrectly verified cryptographic signatures when decoding tokens with PyJWK keys. A remote attacker could possibly use this issue to bypass signature verification and forge valid JSON Web Tokens. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-48523) It was discovered that PyJWT incorrectly handled unknown key identifiers in PyJWKClient. A remote attacker could possibly use this issue to cause PyJWT to make excessive network requests, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48524) It was discovered that PyJWT incorrectly handled payload decoding during detached JWS token verification. A remote attacker could possibly use this issue to cause PyJWT to consume excessive resources, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48525) It was discovered that PyJWT incorrectly validated JSON Web Keys when decoding tokens with both HMAC and asymmetric algorithms enabled. A remote attacker could possibly use this issue to forge valid tokens, resulting in an authentication bypass. (CVE-2026-48526)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8824-1

USN-8824-1: libpcap vulnerability

It was discovered that libpcap did not properly validate BPF instructions in some situation. An attacker could possibly use this issue to perform out of bound memory operations.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8818-1

USN-8818-1: Linux kernel vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8819-1

USN-8819-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8821-1

USN-8821-1: OpenStack Swift vulnerability

It was discovered that OpenStack Swift incorrectly handled truncated aws-chunked PUT request bodies in its s3api middleware. An authenticated attacker could possibly use this issue to cause OpenStack Swift to use excessive resources, leading to a denial of service.

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

CANONICALUSN-8817-1

USN-8817-1: Linux kernel vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - B.A.T.M.A.N. meshing protocol; - HSR network protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000, CVE-2026-64007, CVE-2026-64091)

Known issues: Not stated in the verified publisher record.

Recommended action: Review the official publisher document before deployment.

Source checked 28 Sep 2026 · verified

BlackTree update record

Official publisher source

Known exploited vulnerabilities

Catalogue updated 5 Oct 2026

Matches use the product-family mapping against the CISA Known Exploited Vulnerabilities catalogue. They show vulnerabilities exploited in the wild, not every published CVE. Confirm the affected edition and release in the linked vendor advisory before acting.

No CISA known-exploited entries currently match this mapped product family.

This is not evidence that the product has no vulnerabilities. Review the vendor security advisories for a complete product and release assessment.

Evidence

PRIMARYReview due

Ubuntu release cycle

Ubuntu 24.04 LTS receives standard security maintenance to May 2029, Ubuntu Pro coverage to May 2034 and the Legacy add-on to May 2039.

Manually verified against the registered authoritative source.

Verified 24 Aug 2026 · Source checked 24 Aug 2026 · High confidence · Reviewer Lifecycle seed review

Open vendor source

Change history

Material change log
Workflow State

Representative private pilot catalogue seed.

published