Description
fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, that can be triggered when loading an invalid SoundFont file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FluidSynth | fluidsynth | < 2.1.8 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | fluidsynth | 2.1.7-1.1 | — |
| Debian 13 | fluidsynth | 2.1.7-1.1 | — |
| Debian 12 | fluidsynth | 2.1.7-1.1 | — |
| Debian 9 | fluidsynth | 1.1.6-4+deb9u1 | DLA-2697-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 20.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 18.04 LTS | fluidsynth | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 14.04 LTS | fluidsynth | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.13 | fluidsynth | 2.1.8-r0 | — |
Advisories 1
- DLA-2697-1 fluidsynth - security update Debian Security (DSA / DLA) · Mar 9, 2026