Description
Integer signedness error in the fourxm_read_header function in libavformat/4xm.c in FFmpeg before revision 16846 allows remote attackers to execute arbitrary code via a malformed 4X movie file with a large current_track value, which triggers a NULL pointer dereference.
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 | 0.svn20080206-16 | — |
| Debian 14 | mplayer | 1.0~rc2-14 | — |
| Debian 13 | ffmpeg | 0.svn20080206-16 | — |
| Debian 13 | mplayer | 1.0~rc2-14 | — |
| Debian 12 | ffmpeg | 0.svn20080206-16 | — |
| Debian 12 | mplayer | 1.0~rc2-14 | — |
| Debian 5.0 | ffmpeg-debian | 0.svn20080206-17+lenny1 | DSA-1781-1 |
| Debian 4.0 | ffmpeg | 0.cvs20060823-8+etch1 | DSA-1781-1 |
| Debian 4.0 | mplayer | 1.0~rc1-12etch7 | DSA-1782-1 |
Advisories 2
- DSA-1781-1 ffmpeg ffmpeg-debian - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1782-1 mplayer - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- ADV-2009-0277 vdb-entry
- http://svn.mplayerhq.hu/ffmpeg/trunk/libavformat/4xm.c?r1=16838&r2=16846&pathrev=16846
- 34845 third-party-advisory
- 33711 third-party-advisory
- 33502 vdb-entry
- DSA-1781 vendor-advisory
- 51643 vdb-entry
- USN-734-1 vendor-advisory
- 34905 third-party-advisory
- DSA-1782 vendor-advisory
- http://git.ffmpeg.org/?p=ffmpeg%3Ba=commitdiff%3Bh=72e715fb798f2cb79fd24a6d2eaeafb7c6eeda17
- FEDORA-2009-3428 vendor-advisory
- 34385 third-party-advisory
- GLSA-200903-33 vendor-advisory
- MDVSA-2009:297 vendor-advisory
- FEDORA-2009-3433 vendor-advisory
- ffmpeg-fourxmreadheader-code-execution(48330) vdb-entry
- 34296 third-party-advisory
- 34712 third-party-advisory
- http://svn.mplayerhq.hu/ffmpeg?view=rev&revision=16846
- http://www.trapkit.de/advisories/TKADV2009-004.txt
- 20090128 [TKADV2009-004] FFmpeg Type Conversion Vulnerability mailing-list