CentOS Errata and Security Advisory 2008:0884
https://rhn.redhat.com/errata/RHSA-2008-0884.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390: updates/s390/RPMS/libxml2-2.6.16-12.5.s390.rpm updates/s390/RPMS/libxml2-devel-2.6.16-12.5.s390.rpm updates/s390/RPMS/libxml2-python-2.6.16-12.5.s390.rpm
s390x: updates/s390x/RPMS/libxml2-2.6.16-12.5.s390x.rpm updates/s390x/RPMS/libxml2-devel-2.6.16-12.5.s390x.rpm updates/s390x/RPMS/libxml2-python-2.6.16-12.5.s390x.rpm