The aac_decode_init function in libavcodec/aacdec.c in FFmpeg before 1.0.4 and 1.1.x before 1.1.2 allows remote attackers to have an unspecified impact via a large number of channels in an AAC file, which triggers an out-of-bounds array access.
https://security.gentoo.org/glsa/201603-06
http://www.ffmpeg.org/security.html
http://www.debian.org/security/2013/dsa-2793
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=c459c7b23efffab762560e41ad6a2c0dbbfd4915
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=47e462eecc0a47ad40f59376199f93f227e21d13