Description
Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_vertically_8 at libavfilter/vf_avgblur.c, which could cause a remote Denial of Service.
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 | 7:4.3-2 | — |
| Debian 13 | ffmpeg | 7:4.3-2 | — |
| Debian 12 | ffmpeg | 7:4.3-2 | — |
| Debian 10 | ffmpeg | 7:4.1.8-0+deb10u1 | DSA-4990-1 |
| Debian 9 | ffmpeg | 7:3.2.15-0+deb9u3 | DLA-2742-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu 25.10 | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu 22.04 LTS | ffmpeg | 7:4.4.2-0ubuntu0.22.04.1 | USN-5472-1 |
| Ubuntu 20.04 LTS | ffmpeg | 7:4.2.7-0ubuntu0.1 | USN-5472-1 |
| Ubuntu 18.04 LTS | ffmpeg | 7:3.4.11-0ubuntu0.1 | USN-5472-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu Pro 24.04 LTS | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu Pro 22.04 LTS | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu Pro 20.04 LTS | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu Pro 18.04 LTS | qtwebengine-opensource-src | No fix yet | — |
Advisories 4
- USN-5472-1 ffmpeg vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4990-1 ffmpeg - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2742-1 ffmpeg - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-0210 ffmpeg: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 19, 2025
References
- https://trac.ffmpeg.org/ticket/8274
- [debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update mailing-list
- DSA-4990 vendor-advisory