Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.1.x and 5.5.x allows remote attackers to affect availability via unknown vectors.
http://www.ubuntu.com/usn/USN-1397-1
http://www.oracle.com/technetwork/topics/security/cpujan2012-366304.html
http://www.debian.org/security/2012/dsa-2429
http://security.gentoo.org/glsa/glsa-201308-06.xml
http://secunia.com/advisories/53372