The convert_search_mode_to_innobase function in ha_innodb.cc in the InnoDB engine in MySQL 5.1.23-BK and earlier allows remote authenticated users to cause a denial of service (database crash) via a certain CONTAINS operation on an indexed column, which triggers an assertion error.
http://bugs.gentoo.org/show_bug.cgi?id=198988
http://bugs.mysql.com/bug.php?id=32125
http://lists.grok.org.uk/pipermail/full-disclosure/2007-November/067350.html
http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00003.html
http://secunia.com/advisories/27568
http://secunia.com/advisories/27649
http://secunia.com/advisories/27823
http://secunia.com/advisories/28025
http://secunia.com/advisories/28040
http://secunia.com/advisories/28099
http://secunia.com/advisories/28108
http://secunia.com/advisories/28128
http://secunia.com/advisories/28838
http://security.gentoo.org/glsa/glsa-200711-25.xml
https://exchange.xforce.ibmcloud.com/vulnerabilities/38284
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11390
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00467.html
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00475.html
http://www.debian.org/security/2007/dsa-1413
http://www.mandriva.com/security/advisories?name=MDKSA-2007:243
http://www.redhat.com/support/errata/RHSA-2007-1155.html
http://www.redhat.com/support/errata/RHSA-2007-1157.html
http://www.securitytracker.com/id?1018978