CVE catalog
CVE-2021-21417
fluidsynth: CVE-2021-21417
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.94% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | fluidsynth | sid | 2.6.1+dfsg-2 | fixed |
| Debian | fluidsynth | forky | 2.6.1+dfsg-2 | fixed |
| Debian | fluidsynth | trixie | 2.4.4+dfsg-1+deb13u3 | fixed |
| Debian | fluidsynth | bookworm | 2.3.1-2 | fixed |
| Ubuntu | fluidsynth | pro | 2.1.7-1.1 | vulnerable |
| Ubuntu | fluidsynth | pro | 2.2.4-2 | vulnerable |
| Ubuntu | fluidsynth | pro | 2.2.5-1 | vulnerable |
| Ubuntu | fluidsynth | pro | 2.2.5-1ubuntu0.1~esm1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | fluidsynth | source | sid | 2.1.7-1.1 | not yet assigned | Not reported | Not reported |
| Debian | fluidsynth | source | forky | 2.1.7-1.1 | not yet assigned | Not reported | Not reported |
| Debian | fluidsynth | source | trixie | 2.1.7-1.1 | not yet assigned | Not reported | Not reported |
| Debian | fluidsynth | source | bookworm | 2.1.7-1.1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [fluidsynth]Fixed
Details (2)
2.3.1-2· amd64 · bookwormFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · bookworm; dsa · fluidsynth · debian · 12
2.3.1-2· arm64 · bookwormFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · bookworm; dsa · fluidsynth · debian · 12
- [libfluidsynth3]Fixed
Source package: [fluidsynth]
Details (2)
2.3.1-2· amd64 · bookwormFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · bookworm; dsa · fluidsynth · debian · 12
2.3.1-2· arm64 · bookwormFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · bookworm; dsa · fluidsynth · debian · 12
- [libfluidsynth-dev]Fixed
Source package: [fluidsynth]
Details (2)
2.3.1-2· amd64 · bookwormFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · bookworm; dsa · fluidsynth · debian · 12
2.3.1-2· arm64 · bookwormFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · bookworm; dsa · fluidsynth · debian · 12
[Debian 13 (Trixie)]
- [fluidsynth]Fixed
Details (2)
2.4.4+dfsg-1+deb13u2· amd64 · trixieFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · 13
2.4.4+dfsg-1+deb13u2· arm64 · trixieFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · 13
- [libfluidsynth3]Fixed
Source package: [fluidsynth]
Details (2)
2.4.4+dfsg-1+deb13u2· amd64 · trixieFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · 13
2.4.4+dfsg-1+deb13u2· arm64 · trixieFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · 13
- [libfluidsynth-dev]Fixed
Source package: [fluidsynth]
Details (2)
2.4.4+dfsg-1+deb13u2· amd64 · trixieFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · 13
2.4.4+dfsg-1+deb13u2· arm64 · trixieFixed · Fixed:
2.1.7-1.1dsa · fluidsynth · debian · 13
Observed: