An issue was discovered in GraphicsMagick 1.3.26. A NULL pointer dereference vulnerability was found in the function ReadCINEONImage in coders/cineon.c, which allows attackers to cause a denial of service via a crafted file. References: https://sourceforge.net/p/graphicsmagick/bugs/473/ Patch: http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/53a4d841e90f