Description
libavcodec/gifdec.c in FFmpeg before 2.4.2 does not properly compute image heights, which allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via crafted GIF 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 | 7:2.4.3-1 | — |
| Debian 13 | ffmpeg | 7:2.4.3-1 | — |
| Debian 12 | ffmpeg | 7:2.4.3-1 | — |
| Debian 7 | libav | 6:0.8.17-1 | DSA-3189-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | libav | 6:9.18-0ubuntu0.14.04.1 | — |
Advisories 1
- DSA-3189-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026