Description
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
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 | 4:0.5+svn20090706-3 | — |
| Debian 13 | ffmpeg | 4:0.5+svn20090706-3 | — |
| Debian 12 | ffmpeg | 4:0.5+svn20090706-3 | — |
| Debian 5.0 | ffmpeg-debian | 0.svn20080206-18+lenny1 | DSA-2000-1 |
Advisories 1
- DSA-2000-1 ffmpeg-debian - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- MDVSA-2011:088 vendor-advisory
- 36805 third-party-advisory
- 36465 vdb-entry
- 39482 third-party-advisory
- https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240
- MDVSA-2011:061 vendor-advisory
- MDVSA-2011:112 vendor-advisory
- MDVSA-2011:114 vendor-advisory
- http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
- 38643 third-party-advisory
- ADV-2011-1241 vdb-entry
- MDVSA-2011:060 vendor-advisory
- DSA-2000 vendor-advisory
- USN-931-1 vendor-advisory
- ADV-2010-0935 vdb-entry