RHEL 9 must use a separate file system for /tmp.

STIG ID: RHEL-09-231015 |  SRG: SRG-OS-000480-GPOS-00227 |  Severity: medium |  CCI:  | Vulnerability Id: V-257844

Vulnerability 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

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

Fix

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.