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.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65988
https://bugzilla.redhat.com/show_bug.cgi?id=683183
http://www.vupen.com/english/advisories/2011/0744
http://www.php.net/releases/5_3_6.php
http://www.php.net/archive/2011.php
http://www.php.net/ChangeLog-5.php
http://www.mandriva.com/security/advisories?name=MDVSA-2011:053
http://www.mandriva.com/security/advisories?name=MDVSA-2011:052
http://support.apple.com/kb/HT5002
http://securityreason.com/securityalert/8130
http://marc.info/?l=bugtraq&m=133469208622507&w=2
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html