IOGraphics in Apple OS X before 10.11.4 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app, a different vulnerability than CVE-2016-1746.
https://support.apple.com/HT206167
http://www.zerodayinitiative.com/advisories/ZDI-16-205
http://www.securitytracker.com/id/1035363
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html