MySQL 5.1.61 packages are now available for Debian 6.0 “Squeeze” on amd64 and i386 architectures.
This is a very important security update that fixes unspecified vulnerabilities identified by Oracle in all versions of MySQL 5.1 earlier than 5.1.61. If you did not upgrade to MySQL 5.5, please consider upgrading your MySQL server (at least) to 5.1.61.
FYI, CVE list is as follows :
The corresponding Pinba storage engine has also been rebuilt.
And, as usual, please read the Changelog before upgrading.