1.1.17 Ensure nosuid option set on /dev/shm partition


The nosuid mount option specifies that the filesystem cannot contain setuid files.


Setting this option on a file system prevents users from introducing privileged programs onto the system and allowing non-root users to execute them.


Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /dev/shm partition. See the fstab(5) manual page for more information.
Example: vim /etc/fstab
Run the following command to remount /dev/shm :

# mount -o remount,nosuid /dev/shm


Some distributions mount /dev/shm through other means and require /dev/shm to be added to /etc/fstab even though it is already being mounted on boot. Others may configure /dev/shm in other locations and may override /etc/fstab configuration. Consult the documentation appropriate for your distribution.

This Benchmark recommendation maps to:

Red Hat Enterprise Linux 7 Security Technical Implementation Guide:

Version 2, Release: 3 Benchmark Date: 26 Apr 2019

Vul ID: V-81011

Rule ID: SV-95723r2_rule

STIG ID: RHEL-07-021023

Severity: CAT III

See Also


Item Details


References: 800-53|CM-6, CSCv7|5.1

Plugin: Unix

Control ID: bb40b3671f56f501c3d7719c021190c65938ad30a277e6f89afea1dc50511e7e