Packages
- fluidsynth - Real-time MIDI software synthesizer
Details
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)
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)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | fluidsynth – 2.4.8+dfsg-1ubuntu0.1~esm1 | ||
| libfluidsynth3 – 2.4.8+dfsg-1ubuntu0.1~esm1 | |||
| 24.04 LTS noble | fluidsynth – 2.3.4-1ubuntu0.1~esm1 | ||
| libfluidsynth3 – 2.3.4-1ubuntu0.1~esm1 | |||
| 22.04 LTS jammy | fluidsynth – 2.2.5-1ubuntu0.1~esm1 | ||
| libfluidsynth3 – 2.2.5-1ubuntu0.1~esm1 | |||
| 20.04 LTS focal | fluidsynth – 2.1.1-2ubuntu0.1~esm1 | ||
| libfluidsynth2 – 2.1.1-2ubuntu0.1~esm1 | |||
| 18.04 LTS bionic | fluidsynth – 1.1.9-1ubuntu0.1~esm1 | ||
| libfluidsynth1 – 1.1.9-1ubuntu0.1~esm1 | |||
| 16.04 LTS xenial | fluidsynth – 1.1.6-3ubuntu0.1~esm1 | ||
| libfluidsynth1 – 1.1.6-3ubuntu0.1~esm1 | |||
| 14.04 LTS trusty | fluidsynth – 1.1.6-2ubuntu0.1~esm1 | ||
| libfluidsynth1 – 1.1.6-2ubuntu0.1~esm1 | |||
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