The (1) av_image_fill_pointers, (2) vp5_parse_coeff, and (3) vp6_parse_coeff functions in FFmpeg 0.5.x before 0.5.7, 0.6.x before 0.6.4, 0.7.x before 0.7.9, and 0.8.x before 0.8.8; and in Libav 0.5.x before 0.5.6, 0.6.x before 0.6.4, and 0.7.x before 0.7.3 allow remote attackers to cause a denial of service (out-of-bounds read) via a crafted VP5 or VP6 stream.
ffmpeg.org/
libav.org/
libav.org/releases/libav-0.5.6.changelog
libav.org/releases/libav-0.6.4.changelog
libav.org/releases/libav-0.7.3.changelog
ubuntu.com/usn/usn-1320-1
ubuntu.com/usn/usn-1333-1
www.mandriva.com/security/advisories?name=MDVSA-2012:074
www.mandriva.com/security/advisories?name=MDVSA-2012:075
www.mandriva.com/security/advisories?name=MDVSA-2012:076