MySQL 5.x before 5.0.36 allows local users to cause a denial of service (database crash) by performing information_schema table subselects and using ORDER BY to sort a single-row result, which prevents certain structure elements from being initialized and triggers a NULL dereference in the filesort function.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9530
https://issues.rpath.com/browse/RPL-1127
http://www.vupen.com/english/advisories/2007/0908
http://www.ubuntu.com/usn/usn-440-1
http://www.securitytracker.com/id?1017746
http://www.securityfocus.com/archive/1/462339/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2008-0364.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:139
http://securityreason.com/securityalert/2413
http://security.gentoo.org/glsa/glsa-200705-11.xml
http://secunia.com/advisories/30351
http://secunia.com/advisories/25946
http://secunia.com/advisories/25389
http://secunia.com/advisories/25196
http://secunia.com/advisories/24609
http://secunia.com/advisories/24483
http://dev.mysql.com/doc/refman/5.0/en/releasenotes-es-5-0-36.html