WebKit in Apple tvOS before 9.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
https://support.apple.com/HT206905
http://www.securityfocus.com/archive/1/539295/100/0/threaded
http://packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html