Oracle MySQL 5.1 before 5.1.49 allows remote authenticated users to cause a denial of service (mysqld daemon crash) by creating temporary tables with nullable columns while using InnoDB, which triggers an assertion failure.
http://bugs.mysql.com/bug.php?id=54044
http://dev.mysql.com/doc/refman/5.1/en/news-5-1-49.html
https://bugzilla.redhat.com/show_bug.cgi?id=628192
http://secunia.com/advisories/42875
http://secunia.com/advisories/42936
https://exchange.xforce.ibmcloud.com/vulnerabilities/64686
http://www.debian.org/security/2011/dsa-2143
http://www.mandriva.com/security/advisories?name=MDVSA-2010:155
http://www.mandriva.com/security/advisories?name=MDVSA-2010:222
http://www.mandriva.com/security/advisories?name=MDVSA-2011:012
http://www.openwall.com/lists/oss-security/2010/09/28/10
http://www.redhat.com/support/errata/RHSA-2010-0825.html
http://www.redhat.com/support/errata/RHSA-2011-0164.html
http://www.ubuntu.com/usn/USN-1017-1
http://www.ubuntu.com/usn/USN-1397-1
http://www.vupen.com/english/advisories/2011/0105
http://www.vupen.com/english/advisories/2011/0133