Use-after-free vulnerability in the _zend_shared_memdup function in zend_shared_alloc.c in the OPcache extension in PHP through 5.6.7 allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors.
https://support.apple.com/HT205267
https://security.gentoo.org/glsa/201606-10
http://www.securityfocus.com/bid/71929
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://rhn.redhat.com/errata/RHSA-2015-1066.html
http://rhn.redhat.com/errata/RHSA-2015-1053.html
http://openwall.com/lists/oss-security/2015/01/24/9
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=777c39f4042327eac4b63c7ee87dc1c7a09a3115