Multiple integer overflows in libpng before 1.5.14rc03 allow remote attackers to cause a denial of service (crash) via a crafted image to the (1) png_set_sPLT or (2) png_set_text_2 function, which triggers a heap-based buffer overflow.
http://www.securityfocus.com/bid/67344
http://sourceforge.net/p/libpng/bugs/199/
http://seclists.org/oss-sec/2014/q2/83
http://lists.opensuse.org/opensuse-updates/2014-05/msg00015.html