The do_soap_call function in ext/soap/soap.c in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 does not verify that the uri property is a string, which allows remote attackers to obtain sensitive information by providing crafted serialized data with an int data type, related to a "type confusion" issue.
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.opensuse.org/opensuse-updates/2015-06/msg00028.html
http://openwall.com/lists/oss-security/2015/06/01/4
http://php.net/ChangeLog-5.php
http://rhn.redhat.com/errata/RHSA-2015-1053.html
http://rhn.redhat.com/errata/RHSA-2015-1066.html
http://rhn.redhat.com/errata/RHSA-2015-1135.html
http://rhn.redhat.com/errata/RHSA-2015-1218.html
https://bugs.php.net/bug.php?id=69085
https://security.gentoo.org/glsa/201606-10
https://support.apple.com/kb/HT205031
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html