Descriptionlibav before 12.1 is vulnerable to an invalid read of size 1 due to NULL pointer dereferencing in the nsv_read_chunk function in libavformat/nsvdec.c.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ffmpeg (PTS)buster7:4.1.9-0+deb10u1fixed
buster (security)7:4.1.10-0+deb10u1fixed
bullseye (security), bullseye7:4.3.5-0+deb11u1fixed
bookworm, sid7:5.1.2-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libavsourcewheezy(not affected)
libavsourcejessie(not affected)


[jessie] - libav <not-affected> (Tested with the original reproducer, 0.11 branch not vulnerable)
[wheezy] - libav <not-affected> (Tested with the original reproducer, 0.8 branch not vulnerable)
Fix in libav:
Fix in ffmpeg:

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