RHEL 10 must mount "/tmp" with the "noexec" option.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281239 | RHEL-10-700155 | SV-281239r1166669_rule | CCI-001764 | medium |
| Description | ||||
| The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-7(2)
1.00
- DISA · V1R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.4.7
1.00
- DISA · V1R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-001764
1.00
- DISA · V1R1 · disa_xccdf · related
Details
Check Text (C-281239r1166669_chk)
Verify RHEL 10 is configured so that "/tmp" is mounted with the "noexec" option:
$ mount | grep /tmp
/dev/mapper/luks-c98555c8-0462-4b97-9afa-6db8c4bfee3b on /var/tmp type xfs (rw,nosuid,nodev,noexec,relatime,seclabel,attr2)
If the "/tmp" file system is mounted without the "noexec" option, this is a finding.
Fix Text (F-85705r1166668_fix)
Configure RHEL 10 to mount "/tmp" with the "noexec" option.
Modify "/etc/fstab" to use the "noexec" option on the "/tmp" directory.
To reload all implicit mount units and update the dependency graph so that new options will apply correctly at next remount, run the following command:
$ sudo systemctl daemon-reload
Use the following command to apply the changes immediately without a reboot:
$ sudo mount -o remount /tmp