libavcodec/pngenc.c in FFmpeg before 2.8.5 uses incorrect line sizes in certain row calculations, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted .avi file, related to the apng_encode_frame and encode_apng functions.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=7ec9c5ce8a753175244da971fed9f1e25aef7971 | |
| http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=8f4c3e4b92212d98f5b9ca2dee13e076effe9589 | |
| http://www.securitytracker.com/id/1035010 | vdb entry third party advisory |
| https://security.gentoo.org/glsa/201606-09 | vdb entry third party advisory vendor advisory |