STIGUI
V-269317CAT II — Medium severitySV-269317r1050199_rule

AlmaLinux OS 9 must mount /tmp with the nodev option.

Rule version ALMA-09-026860 · STIG v1 · 2026-08-25

Discussion

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.

Check

Verify "/tmp" is mounted with the "nodev" option:

$ mount | grep ' /tmp'

tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noexec,relatime,seclabel,size=2097152k,inode64)

If the "/tmp" file system is mounted without the "nodev" option, this is a finding.

Fix

Modify "/etc/fstab" to use the "nodev" option on the "/tmp" directory.

Identifiers

Group ID
V-269317
Group title
SRG-OS-000368-GPOS-00154
Rule ID
SV-269317r1050199_rule
Check ID
C-73348r1048327_chk
Fix ID
F-73249r1048328_fix