The DecodeImage function in coders/gif.c in GraphicsMagick 1.3.18 allows remote attackers to cause a denial of service (uninitialized memory access) via a crafted GIF file.
lists.fedoraproject.org/pipermail/package-announce/2016-February/177834.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00032.html
marc.info/?l=graphicsmagick-commit&m=142283721604323&w=2
www.debian.org/security/2016/dsa-3746
www.openwall.com/lists/oss-security/2016/02/06/1
www.openwall.com/lists/oss-security/2016/02/06/3
www.securityfocus.com/bid/83058