Unspecified vulnerability in the server optimizer subcomponent of the Oracle MySQL server could allow authenticated database users to cause a hang or frequently repeatable crash of the MySQL server via multiple protocols.
Upstream announced, supported MySQL server versions, vulnerable to this flaw:
5.5.19 and earlier
According to upstream security advisory, this issue affected MySQL 5.5.x, earlier 5.1.x versions are not listed as affected. Closing this, as MySQL 5.5.x is not included in any Red Hat Enterprise Linux version yet.