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RHEL 9 must mount /boot with the nodev option.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-257860 | RHEL-09-231095 | SV-257860r958804_rule | Medium |
| Description |
|---|
| The only legitimate location for device files is the "/dev" directory located on the root partition. The only exception to this is chroot jails. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-06-04 |
Details
| Check Text ( C-61601r925565_chk ) |
|---|
| Verify that the "/boot" mount point has the "nodev" option is with the following command: Note: This control is not applicable to RHEL 9 system booted UEFI. $ sudo mount | grep '\s/boot\s' /dev/sda1 on /boot type xfs (rw,nodev,relatime,seclabel,attr2) If the "/boot" file system does not have the "nodev" option set, this is a finding. |
| Fix Text (F-61525r925566_fix) |
|---|
| Modify "/etc/fstab" to use the "nodev" option on the "/boot" directory. |