Multiple integer overflows in the (1) pixops_composite_nearest, (2) pixops_composite_color_nearest, and (3) pixops_process functions in pixops/pixops.c in gdk-pixbuf before 2.33.1 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted image, which triggers a heap-based buffer overflow.
https://git.gnome.org/browse/gdk-pixbuf/commit/?id=dbfe8f70471864818bf458a39c8a99640895bd22
http://www.ubuntu.com/usn/USN-3085-1
http://www.openwall.com/lists/oss-security/2016/05/17/7
http://www.openwall.com/lists/oss-security/2016/05/16/1