InformationThe nosuid mount option specifies that the filesystem cannot contain setuid files.
Since the /var filesystem is only intended for variable files such as logs, set this option to ensure that users cannot create setuid files in /var.
SolutionEdit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /var partition.
<device> /var <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0
Run the following command to remount /var with the configured options:
# mount -o remount /var