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

From Oracle Linux 6 Security Technical Implementation Guide

Associated with: CCI-000366

SV-73801r1_rule All device files must be monitored by the system Linux Security Module.

Vulnerability discussion

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

Check content

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

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.

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