Ensure nodev option set on /tmp partition

Information

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

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

See Also

https://www.cisco.com/c/en/us/td/docs/security/firepower/623/configuration/guide/fpmc-config-guide-v623.html