Multiple heap-based buffer overflows in the (1) str_repeat and (2) wordwrap functions in ext/standard/string.c in PHP before 5.1.5, when used on a 64-bit system, have unspecified impact and attack vectors, a different vulnerability than CVE-2006-1990.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10121
http://www.vupen.com/english/advisories/2006/3318
http://www.ubuntu.com/usn/usn-342-1
http://www.securityfocus.com/bid/19582
http://www.securityfocus.com/archive/1/447866/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2006-0682.html
http://www.redhat.com/support/errata/RHSA-2006-0669.html
http://www.php.net/release_5_1_5.php
http://www.php.net/ChangeLog-5.php#5.1.5
http://www.debian.org/security/2006/dsa-1206
http://support.avaya.com/elmodocs2/security/ASA-2006-223.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-222.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-221.htm
http://secunia.com/advisories/22713
http://secunia.com/advisories/22538
http://secunia.com/advisories/22487
http://secunia.com/advisories/22440
http://secunia.com/advisories/22225
http://secunia.com/advisories/22069
http://secunia.com/advisories/22039
http://secunia.com/advisories/22004
http://secunia.com/advisories/21768