WebKit, as used in Apple iOS before 9 and iTunes before 12.3, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2015-09-16-1 and APPLE-SA-2015-09-16-3.
lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
lists.apple.com/archives/security-announce/2015/Sep/msg00003.html
lists.apple.com/archives/security-announce/2015/Sep/msg00007.html
www.securityfocus.com/bid/76766
www.securitytracker.com/id/1033609
support.apple.com/HT205212
support.apple.com/HT205221
support.apple.com/HT205265