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UBUNTU SECURITY NOTICECANONICALVERIFIED

PUBLISHER UPDATE · USN-8885-1

USN-8885-1 release notes and known issues

USN-8885-1: FluidSynth 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 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)

Improvements and security content

  • 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

Publisher statement

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

Affected products and versions

Products

  • Ubuntu

Affected versions

  • 22.04
  • 24.04
  • 26.04

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
CVE-2026-58264Open CVE report →CVE-2026-61714Open CVE report →

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

Ubuntu 24.04 LTSOpen lifecycle record →

Official publisher evidence

CANONICALVERIFIED

USN-8885-1: FluidSynth vulnerabilities

Checked 7 Oct 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.

Open the official publisher source