Several problems have been discovered in MySQL, a commonly used SQL database on Unix servers. The following problems have been identified by the Common Vulnerabilities and Exposures Project:
Oleksandr Byelkin noticed that ALTER TABLE ... RENAME checks CREATE/INSERT rights of the old table instead of the new one.
Lukasz Wojtow noticed a buffer overrun in the mysql_real_connect function.
Dean Ellis noticed that multiple threads ALTERing the same (or different) MERGE tables to change the UNION can cause the server to crash or stall.
For the stable distribution (woody) these problems have been fixed in version 3.23.49-8.8.
For the unstable distribution (sid) these problems have been fixed in version 4.0.21-1.
We recommend that you upgrade your mysql and related packages and restart services linking against them (e.g. Apache/PHP).