Microsoft Windows Graphics Rendering Engine (GRE) allows remote attackers to corrupt memory and cause a denial of service (crash) via a WMF file containing (1) ExtCreateRegion or (2) ExtEscape function calls with arguments with inconsistent lengths.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24044
http://www.vupen.com/english/advisories/2006/0115
http://www.securityfocus.com/archive/1/421258/100/0/threaded
http://www.securityfocus.com/archive/1/421257/100/0/threaded
http://securitytracker.com/id?1015453
http://lostmon.blogspot.com/2007/08/windows-extended-file-attributes-buffer.html
http://blogs.technet.com/msrc/archive/2006/01/09/417198.aspx