MEDIUM
The msrle_decode_pal4 function in msrledec.c in Libav before 10.7 and 11.x before 11.4 and FFmpeg before 2.0.7, 2.2.x before 2.2.15, 2.4.x before 2.4.8, 2.5.x before 2.5.6, and 2.6.x before 2.6.2 allows remote attackers to have unspecified impact via a crafted image, related to a pixel pointer, which triggers an out-of-bounds array access.
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=f7e1367f58263593e6cee3c282f7277d7ee9d553
http://www.debian.org/security/2015/dsa-3288
http://www.securityfocus.com/bid/74433
http://www.ubuntu.com/usn/USN-2944-1
https://git.libav.org/?p=libav.git;a=blob;f=Changelog;hb=refs/tags/v11.4
https://security.gentoo.org/glsa/201603-06