imlib2 before 1.4.7 allows remote attackers to cause a denial of service (segmentation fault) via a GIF image without a colormap.
https://security.gentoo.org/glsa/201611-12
https://git.enlightenment.org/legacy/imlib2.git/tree/ChangeLog
http://www.securityfocus.com/bid/90959
http://www.debian.org/security/2016/dsa-3537
http://lists.opensuse.org/opensuse-updates/2016-05/msg00076.html