mysql is vulnerable to denial of service. It was found that the MySQL PolyFromWKB() function did not sanity check Well-Known Binary (WKB) data. A remote, authenticated attacker could use specially-crafted WKB data to crash mysqld. This issue only caused a temporary denial of service, as mysqld was automatically restarted after the crash.
bugs.mysql.com/bug.php?id=51875
dev.mysql.com/doc/refman/5.1/en/news-5-1-51.html
lists.mysql.com/commits/117094
secunia.com/advisories/42875
secunia.com/advisories/42936
www.debian.org/security/2011/dsa-2143
www.mandriva.com/security/advisories?name=MDVSA-2010:222
www.mandriva.com/security/advisories?name=MDVSA-2010:223
www.redhat.com/security/updates/classification/#moderate
www.redhat.com/support/errata/RHSA-2010-0824.html
www.redhat.com/support/errata/RHSA-2010-0825.html
www.redhat.com/support/errata/RHSA-2011-0164.html
www.securityfocus.com/bid/43676
www.turbolinux.co.jp/security/2011/TLSA-2011-3j.txt
www.ubuntu.com/usn/USN-1017-1
www.ubuntu.com/usn/USN-1397-1
www.vupen.com/english/advisories/2011/0105
www.vupen.com/english/advisories/2011/0170
www.vupen.com/english/advisories/2011/0345
access.redhat.com/errata/RHSA-2010:0824
bugzilla.redhat.com/show_bug.cgi?id=640865
exchange.xforce.ibmcloud.com/vulnerabilities/64838