Description
cbs_jpeg_split_fragment in libavcodec/cbs_jpeg.c in FFmpeg 4.1 and 4.2.2 has a heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check.
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 | ffmpeg | 7:4.2.3-1 | — |
| Debian 13 | ffmpeg | 7:4.2.3-1 | — |
| Debian 12 | ffmpeg | 7:4.2.3-1 | — |
| Debian 10 | ffmpeg | 7:4.1.6-1~deb10u1 | DSA-4722-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | ffmpeg | 7:4.2.4-1ubuntu0.1 | USN-4431-1 |
| Ubuntu 18.04 LTS | ffmpeg | 7:3.4.8-0ubuntu0.2 | USN-4431-1 |
| Ubuntu 16.04 LTS | ffmpeg | 7:2.8.17-0ubuntu0.1 | USN-4431-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ffmpeg | 4.3-r0 | — |
| Alpine v3.23 | ffmpeg | 4.3-r0 | — |
| Alpine v3.22 | ffmpeg +1 | 4.3-r0 | — |
| Alpine v3.21 | ffmpeg +1 | 4.3-r0 | — |
| Alpine v3.20 | ffmpeg +1 | 4.3-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ffmpeg +1 | 4.3-r0 | — |
| Alpine v3.18 | ffmpeg +1 | 4.3-r0 | — |
| Alpine v3.17 | ffmpeg +1 | 4.3-r0 | — |
| Alpine v3.16 | ffmpeg +1 | 4.3-r0 | — |
| Alpine v3.15 | ffmpeg | 4.3-r0 | — |
| Alpine v3.14 | ffmpeg | 4.3-r0 | — |
| Alpine v3.13 | ffmpeg | 4.3-r0 | — |
| Alpine v3.12 | ffmpeg | 4.3-r0 | — |
| Alpine v3.11 | ffmpeg | 4.2.4-r0 | — |
| Alpine v3.10 | ffmpeg | 4.1.6-r0 | — |
Advisories 2
- USN-4431-1 ffmpeg vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4722-1 ffmpeg - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/FFmpeg/FFmpeg/commit/1812352d767ccf5431aa440123e2e260a4db2726
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19734
- DSA-4722 vendor-advisory
- USN-4431-1 vendor-advisory
- GLSA-202007-58 vendor-advisory
- https://github.com/FFmpeg/FFmpeg/commit/a3a3730b5456ca00587455004d40c047f7b20a99