AlmaLinux OS 9 must mount /var/tmp with the nodev option.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-269327	SRG-OS-000368-GPOS-00154	ALMA-09-027960	SV-269327r1050209_rule	2025-02-20	1

Description
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. The only legitimate location for device files is the "/dev" directory located on the root partition, with the exception of chroot jails if implemented.

Description

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. The only legitimate location for device files is the "/dev" directory located on the root partition, with the exception of chroot jails if implemented.

ℹ️ Check
Verify "/var/tmp" is mounted with the "nodev" option: $ mount \| grep /var/tmp /dev/mapper/luks-0e7206e7-bfb1-4a23-ae14-b9cea7cf76d5 on /var/tmp type xfs (rw,nosuid,nodev,noexec,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota) If the "/var/tmp" file system is mounted without the "nodev" option, this is a finding.

✔️ Fix
Modify "/etc/fstab" to use the "nodev" option on the "/var/tmp" directory.