Description
The destroy_buffers function in libavcodec/sanm.c in FFmpeg before 2.7.2 does not properly maintain height and width values in the video context, which allows remote attackers to cause a denial of service (segmentation violation and application crash) or possibly have unspecified other impact via crafted LucasArts Smush video data.
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 | 7:2.7.2-1 | — |
| Debian 13 | ffmpeg | 7:2.7.2-1 | — |
| Debian 12 | ffmpeg | 7:2.7.2-1 | — |
| Debian 8 | libav | 6:11.12-1~deb8u2 | DLA-1611-2, DLA-1611-1 |
Advisories 2
- DLA-1611-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1611-2 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- [debian-lts-announce] 20181220 [SECURITY] [DLA 1611-1] libav security update mailing-list
- 1033483 vdb-entry
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=39bbdebb1ed8eb9c9b0cd6db85afde6ba89d86e4
- [debian-lts-announce] 20181221 [SECURITY] [DLA 1611-2] libav security update mailing-list
- http://ffmpeg.org/security.html