Double free vulnerability in the imap_do_open function in the IMAP extension (ext/imap/php_imap.c) in PHP 5.2 before 5.2.15 and 5.3 before 5.3.4 allows attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via unspecified vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12489
https://exchange.xforce.ibmcloud.com/vulnerabilities/63390
https://bugzilla.redhat.com/show_bug.cgi?id=656917
http://www.vupen.com/english/advisories/2011/0021
http://www.vupen.com/english/advisories/2011/0020
http://www.vupen.com/english/advisories/2010/3313
http://www.vupen.com/english/advisories/2010/3027
http://www.securitytracker.com/id?1024761
http://www.securityfocus.com/bid/44980
http://www.php.net/releases/5_3_4.php
http://www.php.net/releases/5_2_15.php
http://www.php.net/archive/2010.php#id2010-12-10-1
http://www.php.net/ChangeLog-5.php
http://www.mandriva.com/security/advisories?name=MDVSA-2010:239
http://svn.php.net/viewvc?view=revision&revision=305032
http://support.apple.com/kb/HT4581
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.490619
http://secunia.com/advisories/42729
http://marc.info/?l=bugtraq&m=133469208622507&w=2
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html
http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html