libavcodec/wmalosslessdec.c in FFmpeg before 2.1.4 uses an incorrect data-structure size for certain coefficients, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via crafted WMA data.
https://security.gentoo.org/glsa/201603-06
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=ec9578d54d09b64bf112c2bf7a34b1ef3b93dbd3