STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

AlmaLinux OS 9 must disable the Controller Area Network (CAN) kernel module.

DISA Rule

SV-269343r1050225_rule

Vulnerability Number

V-269343

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

ALMA-09-029830

Severity

CAT II

CCI(s)

• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.

Weight

10

Fix Recommendation

To configure the system to prevent the can kernel module from being loaded, run the following command:

$ cat << EOF | tee /etc/modprobe.d/can.conf
install can /bin/false
blacklist can
EOF

Check Contents

Verify that AlmaLinux OS 9 disables the ability to load the can kernel module with the following command:

$ grep -r can /etc/modprobe.conf /etc/modprobe.d/*

/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 line is commented out, and use of CAN is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Vulnerability Number

V-269343

Documentable

False

Rule Version

ALMA-09-029830

Severity Override Guidance

Verify that AlmaLinux OS 9 disables the ability to load the can kernel module with the following command:

$ grep -r can /etc/modprobe.conf /etc/modprobe.d/*

/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 line is commented out, and use of CAN is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Check Content Reference

M

Target Key

5664