AppleRAID in Apple OS X before 10.11.4 allows local users to obtain sensitive kernel memory-layout information or cause a denial of service (out-of-bounds read) via unspecified vectors.
https://support.apple.com/HT206167
http://www.securitytracker.com/id/1035363
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html