IOKit in Apple iOS before 9.2.1, OS X before 10.11.3, and tvOS before 9.1.1 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.
lists.apple.com/archives/security-announce/2016/Jan/msg00002.html
lists.apple.com/archives/security-announce/2016/Jan/msg00003.html
lists.apple.com/archives/security-announce/2016/Jan/msg00005.html
lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
packetstormsecurity.com/files/135435/IOKit-Methods-Being-Called-Without-Locks-From-IOServiceClose.html
www.securitytracker.com/id/1034736
code.google.com/p/google-security-research/issues/detail?id=597
support.apple.com/HT205729
support.apple.com/HT205731
support.apple.com/HT205732
support.apple.com/HT206168
www.exploit-db.com/exploits/39367/