exif.c in the Exif extension in PHP before 5.3.6 on 64-bit platforms performs an incorrect cast, which allows remote attackers to cause a denial of service (application crash) via an image with a crafted Image File Directory (IFD) that triggers a buffer over-read.
http://www.vupen.com/english/advisories/2011/0890
http://www.vupen.com/english/advisories/2011/0764
http://www.vupen.com/english/advisories/2011/0744
http://www.securityfocus.com/bid/46365
http://www.redhat.com/support/errata/RHSA-2011-1423.html
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://www.debian.org/security/2011/dsa-2266
http://svn.php.net/viewvc?view=revision&revision=308316
http://support.apple.com/kb/HT5002
http://securityreason.com/securityalert/8114
http://rhn.redhat.com/errata/RHSA-2012-0071.html
http://openwall.com/lists/oss-security/2011/02/16/7
http://marc.info/?l=bugtraq&m=133469208622507&w=2
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056642.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057710.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057709.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html