The IOAcceleratorFamily API implementation in Apple iOS before 8 and Apple TV before 7 allows attackers to cause a denial of service (NULL pointer dereference and device crash) via an application that uses crafted arguments.
http://archives.neohapsis.com/archives/bugtraq/2014-09/0106.html
http://archives.neohapsis.com/archives/bugtraq/2014-09/0107.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/96106
http://support.apple.com/kb/HT6441