RHEL 9 /etc/gshadow file must be group-owned by root. GROUP ID: V-257903 RULE ID: SV-257903r991589 The "/etc/gshadow" file contains group password hashes. Protection of this file is critical for system security.
Solution
Change the group of the file /etc/gshadow to root by running the following command: $ sudo chgrp root /etc/gshadow