oggparsevorbis.c in FFmpeg 0.5 does not properly perform certain pointer arithmetic, which might allow remote attackers to obtain sensitive memory contents and cause a denial of service via a crafted file that triggers an out-of-bounds read.
scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
secunia.com/advisories/36805
secunia.com/advisories/38643
secunia.com/advisories/39482
www.debian.org/security/2010/dsa-2000
www.mandriva.com/security/advisories?name=MDVSA-2011:060
www.mandriva.com/security/advisories?name=MDVSA-2011:061
www.mandriva.com/security/advisories?name=MDVSA-2011:088
www.mandriva.com/security/advisories?name=MDVSA-2011:112
www.mandriva.com/security/advisories?name=MDVSA-2011:114
www.securityfocus.com/bid/36465
www.ubuntu.com/usn/USN-931-1
www.vupen.com/english/advisories/2010/0935
www.vupen.com/english/advisories/2011/1241
roundup.ffmpeg.org/roundup/ffmpeg/issue1240