1.1.2.2 Ensure nodev option set on /tmp partition

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Information

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

Rationale:

Since the /tmp filesystem is not intended to support devices, set this option to ensure that users cannot create a block or character special devices in /tmp.

Solution

Edit the /etc/fstab file and add nodev to the fourth field (mounting options) for the /tmp partition.
Example:

<device> /tmp <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0

Run the following command to remount /tmp with the configured options:

# mount -o remount /tmp

See Also

https://workbench.cisecurity.org/files/3807