WebKit in Apple iOS before 9.3, Safari before 9.1, and tvOS before 9.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
lists.apple.com/archives/security-announce/2016/Mar/msg00005.html
www.securityfocus.com/archive/1/537948/100/0/threaded
www.securitytracker.com/id/1035353
support.apple.com/HT206166
support.apple.com/HT206169
support.apple.com/HT206171