RHEL 9 /boot/grub2/grub.cfg file must be owned by root.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-257791 | RHEL-09-212030 | SV-257791r991589_rule | CCI-000366 | medium |
| Description | ||||
| The " /boot/grub2/grub.cfg" file stores sensitive system configuration. Protection of this file is critical for system security. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-257791r991589_chk)
Verify the ownership of the "/boot/grub2/grub.cfg" file with the following command:
$ sudo stat -c "%U %n" /boot/grub2/grub.cfg
root /boot/grub2/grub.cfg
If "/boot/grub2/grub.cfg" file does not have an owner of "root", this is a finding.
Fix Text (F-61456r925359_fix)
Change the owner of the file /boot/grub2/grub.cfg to root by running the following command:
$ sudo chown root /boot/grub2/grub.cfg