All device files must be monitored by the system Linux Security Module.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
RHEL-06-000025	RHEL-06-000025	RHEL-06-000025_rule		Low

Description
If a device file carries the SELinux type "unlabeled_t", then SELinux cannot properly restrict access to the device file.

STIG	Date
Red Hat Enterprise Linux 6 Security Technical Implementation Guide	2013-02-05

Details

Check Text ( C-RHEL-06-000025_chk )
If the system is a cross-domain system, this is not applicable. To check for unlabeled device files, run the following command: # ls -RZ /dev | grep unlabeled_t It should produce no output in a well-configured system. If there is output, this is a finding.

Fix Text (F-RHEL-06-000025_fix)
Device files, which are used for communication with important system resources, should be labeled with proper SELinux types. If any device files carry the SELinux type "unlabeled_t", investigate the cause and correct the file's context.