1.1.12 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.


Run the following command to remount /dev/shm:

# mount -o remount,noexec /dev/shm

/etc is stateless on Container-Optimized OS. Therefore, /etc cannot be used to make these changes persistent across reboots. The steps mentioned above needs to be performed after every boot.

See Also