Information
The nosuid mount option specifies that the filesystem cannot contain setuid files. Since the /tmp filesystem is only intended for temporary file storage, set this option to ensure that users cannot create setuid files in /tmp .
Solution
Edit the /etc/fstab file and add nosuid 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,nosuid /tmp
OR Edit /etc/systemd/system/local-fs.target.wants/tmp.mount to add nosuid to the /tmp mount options:
[Mount]
Options=mode=1777,strictatime,noexec,nodev,nosuid
Run the following command to remount /tmp :
# mount -o remount,nosuid /tmp