we need to set a minimum version of dnsmasq package with the fix for the security vulnerability described in https://access.redhat.com/security/vulnerabilities/RHSB-2021-001
Verified on 4.5.29
[kni@provisionhost-0-0 ~]$ oc get clusterversion
NAME VERSION AVAILABLE PROGRESSING SINCE STATUS
version 4.5.29 True False 40m Cluster version is 4.5.29
[core@master-0-0 ~]$ rpm -qa dnsmasq
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (OpenShift Container Platform 4.5.30 bug fix update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.