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.
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=7ec9c5ce8a753175244da971fed9f1e25aef7971
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=8f4c3e4b92212d98f5b9ca2dee13e076effe9589
Source: MITRE
Published: 2016-02-12
Updated: 2016-12-06
Type: CWE-119
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8
Severity: HIGH