libavcodec/tiff.c in FFmpeg before 2.4.2 does not properly validate bits-per-pixel fields, which allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via crafted TIFF data.
https://security.gentoo.org/glsa/201603-06
http://www.ubuntu.com/usn/USN-2534-1
http://www.ffmpeg.org/security.html
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=e1c0cfaa419aa5d320540d5a1b3f8fd9b82ab7e5