Description
fluidsynth-2.4.6 and earlier versions is vulnerable to Null pointer dereference in fluid_synth_monopoly.c, that can be triggered when loading an invalid midi file.
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 | 2.4.7+dfsg-1 | — |
| Debian 13 | fluidsynth | 2.4.4+dfsg-1+deb13u2 | — |
| Debian 12 | fluidsynth | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 22.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 20.04 LTS | fluidsynth | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 16.04 LTS | fluidsynth | No fix yet | — |
| Ubuntu Pro 14.04 LTS | fluidsynth | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | fluidsynth | 2.5.2-2.1 | openSUSE-SU-2026:10038-1 |
| openSUSE Tumbleweed | musescore | 4.7.4-1.1 | openSUSE-SU-2026:11496-1 |
| openSUSE Leap 16.0 | fluidsynth | 2.3.5-160000.3.1 | openSUSE-SU-2026:20291-1 |
Advisories 3
- openSUSE-SU-2026:11496-1 musescore-4.7.4-1.1 on GA media SUSE / openSUSE Security Updates · Aug 12, 2026
- openSUSE-SU-2026:20291-1 Security update for fluidsynth SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10038-1 fluidsynth-2.5.2-2.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026