An unspecified IOAcceleratorFamily function in Apple OS X before 10.9.5 lacks proper bounds checking on read operations, which allows attackers to execute arbitrary code in a privileged context via a crafted application.
https://exchange.xforce.ibmcloud.com/vulnerabilities/96063
https://code.google.com/p/google-security-research/issues/detail?id=33
http://www.securitytracker.com/id/1030868