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UBUNTU SECURITY NOTICECANONICALVERIFIED

PUBLISHER UPDATE · USN-8876-1

USN-8876-1 release notes and known issues

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

Scope: Ubuntu. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.

Summary

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

Improvements and security content

  • 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

Publisher statement

Not stated. The verified publisher record does not contain a known-issues statement.

Affected products and versions

Products

  • Ubuntu

Affected versions

  • See the official publisher source for applicability.

Fixed versions or updates

  • No fixed version is stated in this record.

Recommended action

Review the official publisher document before deployment.

Related vulnerabilities

BlackTree CVE Intelligence

These links connect the publisher update to related Lifecycle records without treating the update publication date as an end-of-support date.

Official publisher evidence

CANONICALVERIFIED

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

Checked 6 Oct 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.

Open the official publisher source