WebKit, as used in Apple Safari before 6.1.6 and 7.x before 7.0.6, 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 HT6367.
http://secunia.com/advisories/60705
https://exchange.xforce.ibmcloud.com/vulnerabilities/95273
https://security.gentoo.org/glsa/201601-02
https://support.apple.com/kb/HT6537