AlmaLinux OS 9 must prevent special devices on nonroot local partitions.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-269290	SRG-OS-000480-GPOS-00227	ALMA-09-023780	SV-269290r1050172_rule	2025-02-20	1

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 nonroot local partitions are mounted with the "nodev" option with the following command: $ 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 nonroot local partitions.