This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of Apple OS X. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the handling of the AppleGraphicsPowerManagement kext. The issue lies in the absence of a check to ensure that a pointer is not null. An attacker can leverage this vulnerability to escalate privileges under the context of the kernel.