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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-217864	RHEL-06-000025	SV-217864r505923_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	2020-09-03

Details

Check Text ( C-19345r376607_chk )
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-19343r376608_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.