RHEL 9 must be configured to disable the Controller Area Network kernel module.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-257805 | RHEL-09-213050 | SV-257805r1044856_rule | CCI-000381 | medium |
| Description | ||||
| Disabling Controller Area Network (CAN) protects the system against exploitation of any flaws in its implementation. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2025-05-14 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-7
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.4.6
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000381
1.00
- DISA · 2 · disa_xccdf · related
Details
Check Text (C-257805r1044856_chk)
Verify that RHEL 9 disables the ability to load the CAN kernel module with the following command:
$ grep -r can /etc/modprobe.conf /etc/modprobe.d/*
install can /bin/false
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 (ISSO) as an operational requirement, this is a finding.
Fix Text (F-61470r1044855_fix)
To configure the system to prevent the can kernel module from being loaded, add the following lines to the file /etc/modprobe.d/can.conf (or create can.conf if it does not exist):
install can /bin/false
blacklist can