RHEL 9 must use a separate file system for /tmp.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-257844 | SRG-OS-000480-GPOS-00227 | RHEL-09-231015 | SV-257844r1044918_rule | 2026-02-05 | 2 |
Description
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.
ℹ️ Check
Verify that a separate file system/partition has been created for "/tmp" with the following command:
$ mount | grep /tmp
/dev/mapper/rhel-tmp on /tmp type xfs (rw,nodev,nosuid,noexec,seclabel)
If a separate entry for "/tmp" is not in use, this is a finding.
✔️ Fix
Migrate the "/tmp" path onto a separate file system.