CentOS Errata and Security Advisory 2007:0152
https://rhn.redhat.com/errata/RHSA-2007-0152.html
The following updated files have been uploaded and are currently syncing to the mirrors:
i386: mysql-4.1.20-2.RHEL4.1.i386.rpm mysql-bench-4.1.20-2.RHEL4.1.i386.rpm mysql-devel-4.1.20-2.RHEL4.1.i386.rpm mysql-server-4.1.20-2.RHEL4.1.i386.rpm
src: mysql-4.1.20-2.RHEL4.1.src.rpm