Integer overflow in ext/shmop/shmop.c in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (crash) and possibly read sensitive memory via a large third argument to the shmop_read function.
http://bugs.php.net/bug.php?id=54193
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
http://marc.info/?l=bugtraq&m=133469208622507&w=2
https://bugzilla.redhat.com/show_bug.cgi?id=683183
http://securityreason.com/securityalert/8130
https://exchange.xforce.ibmcloud.com/vulnerabilities/65988
http://support.apple.com/kb/HT5002
http://www.exploit-db.com/exploits/16966
http://www.mandriva.com/security/advisories?name=MDVSA-2011:052
http://www.mandriva.com/security/advisories?name=MDVSA-2011:053
http://www.openwall.com/lists/oss-security/2011/03/08/11
http://www.openwall.com/lists/oss-security/2011/03/08/9
http://www.php.net/archive/2011.php
http://www.php.net/ChangeLog-5.php