gdk-pixbuf-thumbnailer.c in gdk-pixbuf allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors related to printing an error message.
https://security.gentoo.org/glsa/201709-08
https://bugzilla.gnome.org/show_bug.cgi?id=778204
http://www.securityfocus.com/bid/96779
http://www.openwall.com/lists/oss-security/2017/02/26/1