InformationThe noexec mount option specifies that the filesystem cannot contain executable binaries.
Since the /tmp filesystem is only intended for temporary file storage, set this option to ensure that users cannot run executable binaries from /tmp .
SolutionEdit the /etc/fstab file OR the /etc/systemd/system/local-fs.target.wants/tmp.mount file:
IF /etc/fstab is used to mount /tmp
Edit the /etc/fstab file and add noexec 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,noexec /tmp
IF systemd is used to mount /tmp:
Edit /etc/systemd/system/local-fs.target.wants/tmp.mount to add noexec to the /tmp mount options:
Run the following command to restart the systemd daemon:
# systemctl daemon-reload
Run the following command to restart tmp.mount
# systemctl restart tmp.mount