The updated polkit packages for CloudLinux OS 7, 7 hybrid and 8 with the fix for the CVE 2021-4034 have been released.
Updates for CloudLinux OS 6 within ELS will be available within the current week.
Packages versions with the fix:
CloudLinux OS 7: 0.112-26.el7_9.1
CloudLinux OS 8: 0.115-13.el8_5.1
yum update
yum update polkit