PHP is vulnerable to a double free. It is due to a flaw in zend_ts_hash_graceful_destroy() function in the PHP ZTS module.
advisories.mageia.org/MGASA-2015-0040.html
git.php.net/?p=php-src.git;a=commit;h=24125f0f26f3787c006e4a51611ba33ee3b841cb
git.php.net/?p=php-src.git;a=commit;h=2bcf69d073190e4f032d883f3416dea1b027a39e
git.php.net/?p=php-src.git;a=commit;h=fbf3a6bc1abcc8a5b5226b0ad9464c37f11ddbd6
lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
openwall.com/lists/oss-security/2014/12/29/6
rhn.redhat.com/errata/RHSA-2015-1218.html
www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
www.securityfocus.com/bid/71800
access.redhat.com/security/cve/CVE-2015-4643
access.redhat.com/security/updates/classification/#moderate
bugs.php.net/bug.php?id=68676
rhn.redhat.com/errata/RHSA-2015-1218.html
security.gentoo.org/glsa/201503-03
support.apple.com/HT205267