The my_net_skip_rest function in sql/net_serv.cc in MySQL 5.0 through 5.0.91 and 5.1 before 5.1.47 allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by sending a large number of packets that exceed the maximum length.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7328
http://www.ubuntu.com/usn/USN-1397-1
http://www.mandriva.com/security/advisories?name=MDVSA-2010:107
http://support.apple.com/kb/HT4435
http://securitytracker.com/id?1024032
http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html
http://lists.mysql.com/commits/106060
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
http://dev.mysql.com/doc/refman/5.1/en/news-5-1-47.html