Heap-based buffer overflow in IOHIDFamily in Apple iOS before 9.3.2, OS X before 10.11.5, and tvOS before 9.2.1 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.
https://support.apple.com/en-us/HT206567
https://support.apple.com/en-in/HT206568
https://support.apple.com/en-in/HT206564
http://www.zerodayinitiative.com/advisories/ZDI-16-494