The ff_er_frame_end function in libavcodec/error_resilience.c in FFmpeg before 1.0.4 and 1.1.x before 1.1.1 does not properly verify that a frame is fully initialized, which allows remote attackers to trigger a NULL pointer dereference via crafted picture data.
https://security.gentoo.org/glsa/201603-06
http://www.mandriva.com/security/advisories?name=MDVSA-2014:227
http://www.ffmpeg.org/security.html
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=68a0477bc0af026db971ddba22541029a9e8715b
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=3e196e4def03c7a91423803402f84d638d316c33