STIGQter: STIG Summary: Oracle Linux 8 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

OL 8 must not have the asynchronous transfer mode (ATM) kernel module installed if not required for operational support.

DISA Rule

SV-248829r991589_rule

Vulnerability Number

V-248829

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL08-00-040021

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure OL 8 to disable the ability to use the "atm" kernel module.

Create a file under "/etc/modprobe.d" with the following command:

$ sudo touch /etc/modprobe.d/atm.conf

Add the following line to the created file:

install atm /bin/false

Configure OL 8 to disable the ability to use the atm kernel module.

$ sudo vi /etc/modprobe.d/blacklist.conf

Add or update the line:

blacklist atm

Check Contents

Verify the operating system disables the ability to load the "atm" kernel module.

$ sudo grep -r atm /etc/modprobe.d/* | grep -i "/bin/false" | grep -v "^#"
install atm /bin/false

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.

Verify the operating system disables the ability to use ATM with the following command:

$ sudo grep atm /etc/modprobe.d/* | grep -i "blacklist" | grep -v "^#"
blacklist atm

If the command does not return any output or the output is not "blacklist atm", and use of ATM is not documented with the ISSO as an operational requirement, this is a finding.

Vulnerability Number

V-248829

Documentable

False

Rule Version

OL08-00-040021

Severity Override Guidance

Verify the operating system disables the ability to load the "atm" kernel module.

$ sudo grep -r atm /etc/modprobe.d/* | grep -i "/bin/false" | grep -v "^#"
install atm /bin/false

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.

Verify the operating system disables the ability to use ATM with the following command:

$ sudo grep atm /etc/modprobe.d/* | grep -i "blacklist" | grep -v "^#"
blacklist atm

If the command does not return any output or the output is not "blacklist atm", and use of ATM is not documented with the ISSO as an operational requirement, this is a finding.

Check Content Reference

M

Target Key

5416