RHEL 9 must prevent special devices on non-root local partitions.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-257881	SRG-OS-000480-GPOS-00227	RHEL-09-231200	SV-257881r991589_rule	2025-02-27	2

Description
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. The only legitimate location for device files is the "/dev" directory located on the root partition, with the exception of chroot jails if implemented.

Description

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. The only legitimate location for device files is the "/dev" directory located on the root partition, with the exception of chroot jails if implemented.

ℹ️ Check
Verify all non-root local partitions are mounted with the "nodev" option with the following command: $ sudo mount \| grep '^/dev\S* on /\S' \| grep --invert-match 'nodev' If any output is produced, this is a finding.

✔️ Fix
Configure the "/etc/fstab" to use the "nodev" option on all non-root local partitions.