Description
libavcodec/webp.c in FFmpeg before 2.8.12, 3.0.x before 3.0.8, 3.1.x before 3.1.8, 3.2.x before 3.2.5, and 3.3.x before 3.3.1 does not ensure that pix_fmt is set, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file, related to the vp8_decode_mb_row_no_filter and pred8x8_128_dc_8_c functions.
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 | 7:3.2.5-1 | — |
| Debian 13 | ffmpeg | 7:3.2.5-1 | — |
| Debian 12 | ffmpeg | 7:3.2.5-1 | — |
| Debian 8 | libav | 6:11.12-1~deb8u4 | DLA-1630-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | ffmpeg | 7:2.8.14-0ubuntu0.16.04.1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | libav | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.6 | ffmpeg | 3.2.5-r0 | — |
| Alpine v3.5 | ffmpeg | 3.1.8-r0 | — |
| Alpine v3.4 | ffmpeg | 3.1.8-r0 | — |
Advisories 1
- DLA-1630-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1435
- 99317 vdb-entry
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1434
- [debian-lts-announce] 20190107 [SECURITY] [DLA 1630-1] libav security update mailing-list
- https://github.com/FFmpeg/FFmpeg/commit/6b5d3fb26fb4be48e4966e4b1d97c2165538d4ef