The avpriv_dv_produce_packet function in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11 and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) and possibly execute arbitrary code via a crafted DV file.
http://www.ubuntu.com/usn/USN-1479-1
http://www.debian.org/security/2012/dsa-2471
http://secunia.com/advisories/49089
http://git.libav.org/?p=libav.git%3Ba=commitdiff%3Bh=5a396bb3a66a61a68b80f2369d0249729bf85e04
http://git.libav.org/?p=libav.git%3Ba=commit%3Bh=635bcfccd439480003b74a665b5aa7c872c1ad6b