STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must be configured to disable the Asynchronous Transfer Mode (ATM) kernel module.

DISA Rule

SV-282474r1200402_rule

Vulnerability Number

V-282474

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

TOSS-05-000104

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

Configure the system to prevent the atm kernel module from being loaded by adding the following line to the file /etc/modprobe.d/atm.conf (or create atm.conf if it does not exist):

install atm /bin/false
blacklist atm

Check Contents

Verify TOSS 5 disables the ability to load the ATM kernel module using the following command:

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

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-282474

Documentable

False

Rule Version

TOSS-05-000104

Severity Override Guidance

Verify TOSS 5 disables the ability to load the ATM kernel module using the following command:

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

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

5738