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RHEL-10-701100 RHEL 10 must be configured to disable the Controller Area Network (CAN) kernel module.

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

RHEL 10 must be configured to disable the Controller Area Network (CAN) kernel module.

Control

Verify RHEL 10 disables the ability to load the CAN kernel module with the following command: $ sudo grep -rs can /etc/modprobe.conf /etc/modprobe.d/* | grep -v '#' /etc/modprobe.d/can.conf:install can /bin/false /etc/modprobe.d/can.conf:blacklist can If the command does not return any output, or the lines are commented out, and use of CAN is not documented with the information system security officer as an operational requirement, this is a finding.

Discussion

Disabling CAN protects the system against exploitation of any flaws in its implementation.

Related controls

CCI-000381

Fix

Configure RHEL 10 to disable the ability to load the CAN kernel module. Create a drop-in if it does not already exist: $ sudo vi /etc/modprobe.d/can.conf Add the following lines to the file: install can /bin/false blacklist can