Title

RHEL 9 must use a separate file system for /tmp. (Cat II impact)

Discussion

The "/tmp" partition is used as temporary storage by many programs. Placing "/tmp" in its own partition enables the setting of more restrictive mount options, which can help protect programs that use it.

Check Content

Verify that a separate file system/partition has been created for "/tmp" with the following command: $ mount | grep /tmp tmpfs /tmp tmpfs noatime,mode=1777 0 0 If a separate entry for "/tmp" is not in use, this is a finding.

Fix Text

Migrate the "/tmp" path onto a separate file system.

Additional Identifiers

Rule ID: SV-257844r925519_rule

Vulnerability ID: V-257844

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.