Heap-based buffer overflow in giffix.c in giffix in giflib 5.1.1 allows attackers to cause a denial of service (program crash) via crafted image and logical screen width fields in a GIF file.
lists.fedoraproject.org/pipermail/package-announce/2016-January/174876.html
packetstormsecurity.com/files/135034/giflib-5.1.1-Heap-Overflow.html
seclists.org/fulldisclosure/2015/Dec/83
www-01.ibm.com/support/docview.wss?uid=isg3T1023474
www.securityfocus.com/archive/1/537171/100/0/threaded
www.securityfocus.com/bid/81697
www.securitytracker.com/id/1035331
source.android.com/security/bulletin/2017-05-01