Secunia

MySQL contains a double-free bug since it sometimes tries to free the same memory location twice, which can lead to a DoS (Denial of Service) on mysqld.

The vulnerability is in the mysql_change_user() handling and a user can exploit the vulnerability by connecting with a malicious MySQL client. Successful exploitation will crash the mysqld deamon but requires logon using a valid user account.

Solution
Update MySQL to the latest version (3.23.55).
Further details available in Customer Area

Provided and/or discovered by
Reported in changelog for version 3.23.55.

Original Advisory
http://www.mysql.com/doc/en/News-3.23.55.html

Deep Links
Links available in Customer Area