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

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-269326	SRG-OS-000368-GPOS-00154	ALMA-09-027850	SV-269326r1050208_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" is mounted with the "nodev" option: $ mount \| grep ' /var ' /dev/mapper/luks-b23d8276-7844-4e79-8a58-505150b6eb42 on /var type xfs (rw,nosuid,nodev,noexec,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota) If the "/var" file system is mounted without the "nodev" option, this is a finding.

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