The tak_decode_frame function in libavcodec/takdec.c in FFmpeg before 2.1.4 does not properly validate a certain bits-per-sample value, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted TAK (aka Tom's lossless Audio Kompressor) data.
https://security.gentoo.org/glsa/201603-06
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=f58eab151214d2d35ff0973f2b3e51c5eb372da4