Multiple unspecified vulnerabilities in libavcodec/wmalosslessdec.c in FFmpeg before 0.11 have unknown impact and attack vectors, related to (1) "some subframes only encode some channels" or (2) a large order value.
http://www.securityfocus.com/bid/55355
http://www.openwall.com/lists/oss-security/2012/09/02/4
http://www.openwall.com/lists/oss-security/2012/08/31/3
http://secunia.com/advisories/50468
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=d462949974668ffb013467d12dc4934b9106fe19
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=326f7a68bbd429c63fd2f19f4050658982b5b081