CVE-2017-11139
GraphicsMagick 1.3.26 has double free vulnerabilities in the ReadOneJNGImage() function in coders/png.c.
Date published : 2017-07-09
http://www.securityfocus.com/bid/99504
http://hg.code.sf.net/p/graphicsmagick/code/rev/4d0baa77245b