Information
The nodev mount option specifies that the filesystem cannot contain special devices. Since the /tmp filesystem is not intended to support devices, set this option to ensure that users cannot attempt to create 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. See the fstab(5) manual page for more information. Run the following command to remount /tmp :
# mount -o remount,nodev /tmp
OR Edit /etc/systemd/system/local-fs.target.wants/tmp.mount to add nodev to the /tmp mount options:
[Mount]
Options=mode=1777,strictatime,noexec,nodev,nosuid
Run the following command to remount /tmp :
# mount -o remount,nodev /tmp