1.1.16 Ensure nodev option set on /dev/shm partition


The nodev mount option specifies that the filesystem cannot contain special devices.


Since the /dev/shm filesystem is not intended to support devices, set this option to ensure that users cannot attempt to create special devices in /dev/shm partitions.


Edit the /etc/fstab file and add nodev 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,nodev /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-81009

Rule ID: SV-95721r2_rule

STIG ID: RHEL-07-021022

Severity: CAT III

See Also


Item Details


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

Plugin: Unix

Control ID: 864842077129a531fe6760806d8ceef0b16ef65c1266773e83d12b8a2d53bb9c