Multiple use-after-free vulnerabilities in ext/date/php_date.c in PHP before 5.4.38, 5.5.x before 5.5.22, and 5.6.x before 5.6.6 allow remote attackers to execute arbitrary code via crafted serialized input containing a (1) R or (2) r type specifier in (a) DateTimeZone data handled by the php_date_timezone_initialize_from_hash function or (b) DateTime data handled by the php_date_initialize_from_hash function.
https://support.apple.com/HT205375
https://support.apple.com/HT205267
https://security.gentoo.org/glsa/201606-10
https://bugzilla.redhat.com/show_bug.cgi?id=1194730
http://www.ubuntu.com/usn/USN-2535-1
http://www.securitytracker.com/id/1031945
http://www.securityfocus.com/bid/72701
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.mandriva.com/security/advisories?name=MDVSA-2015:079
http://www.debian.org/security/2015/dsa-3195
http://support.apple.com/kb/HT204942
http://rhn.redhat.com/errata/RHSA-2015-1218.html
http://rhn.redhat.com/errata/RHSA-2015-1135.html
http://rhn.redhat.com/errata/RHSA-2015-1066.html
http://rhn.redhat.com/errata/RHSA-2015-1053.html
http://php.net/ChangeLog-5.php
http://marc.info/?l=bugtraq&m=144050155601375&w=2
http://marc.info/?l=bugtraq&m=143748090628601&w=2
http://marc.info/?l=bugtraq&m=143403519711434&w=2
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=71335e6ebabc1b12c057d8017fd811892ecdfd24