CentOS Errata and Security Advisory 2005:535
https://rhn.redhat.com/errata/RHSA-2005-535.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390: updates/s390/RPMS/sudo-1.6.7p5-1.1.s390.rpm
s390x: updates/s390x/RPMS/sudo-1.6.7p5-1.1.s390x.rpm