1.1.17 Ensure noexec option set on /dev/shm partition


The noexec mount option specifies that the filesystem cannot contain executable binaries.


Setting this option on a file system prevents users from executing programs from shared memory. This deters users from introducing potentially malicious software on the system.


Edit the /etc/fstab file and add noexec to the fourth field (mounting options) for the /dev/shm partition. See the fstab(5) manual page for more information.

Run the following command to remount /dev/shm :

# mount -o remount,noexec /dev/shm

See Also