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 Asynchronous Transfer Mode (ATM) kernel module.

DISA Rule

SV-269341r1050223_rule

Vulnerability Number

V-269341

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

ALMA-09-029610

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 atm kernel module from being loaded, run the following command:

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

Check Contents

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

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

/etc/modprobe.d/atm.conf:install atm /bin/false
/etc/modprobe.d/atm.conf:blacklist atm

If the command does not return any output, or the line is commented out, and use of atm is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Vulnerability Number

V-269341

Documentable

False

Rule Version

ALMA-09-029610

Severity Override Guidance

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

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

/etc/modprobe.d/atm.conf:install atm /bin/false
/etc/modprobe.d/atm.conf:blacklist atm

If the command does not return any output, or the line is commented out, and use of atm 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