The dl function in PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a long string in the library parameter. NOTE: there are limited usage scenarios under which this would be a vulnerability.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5767
https://issues.rpath.com/browse/RPL-1943
http://www.vupen.com/english/advisories/2008/0924/references
http://www.vupen.com/english/advisories/2008/0398
http://www.vupen.com/english/advisories/2007/3825
http://www.securityfocus.com/bid/26403
http://www.securityfocus.com/archive/1/491693/100/0/threaded
http://www.securityfocus.com/archive/1/478988/100/0/threaded
http://www.securityfocus.com/archive/1/478985/100/0/threaded
http://www.php.net/releases/5_2_5.php
http://www.php.net/ChangeLog-5.php#5.2.5
http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242
http://securityreason.com/securityalert/3133
http://secunia.com/advisories/30040
http://secunia.com/advisories/29420
http://secunia.com/advisories/28750
http://secunia.com/advisories/27659
http://secunia.com/advisories/27102
http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01345501