RHEL 9 groups must have unique Group ID (GID).
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258061 | RHEL-09-411110 | SV-258061r958482_rule | CCI-000764 | medium |
| Description | ||||
| To ensure accountability and prevent unauthenticated access, groups must be identified uniquely to prevent potential misuse and compromise of the system. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-258061r958482_chk)
Verify that RHEL 9 contains no duplicate GIDs for interactive users with the following command:
$ cut -d : -f 3 /etc/group | uniq -d
If the system has duplicate GIDs, this is a finding.
Fix Text (F-61726r926169_fix)
Edit the file "/etc/group" and provide each group that has a duplicate GID with a unique GID.