STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 must disable the kernel.core_pattern.

DISA Rule

SV-257803r1155668_rule

Vulnerability Number

V-257803

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-09-213040

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure RHEL 9 to disable storing core dumps.

Create a drop-in if it does not already exist:

$ sudo vi /etc/sysctl.d/99-kernel_core_pattern.conf

Add the following to the file:
kernel.core_pattern = |/bin/false

Reload settings from all system configuration files with the following command:

$ sudo sysctl --system

Check Contents

Verify RHEL 9 disables storing core dumps.

Check the status of the "kernel.core_pattern" kernel parameter with the following command:

$ sudo sysctl kernel.core_pattern
kernel.core_pattern = |/bin/false

If "kernel.core_pattern" is not set to "|/bin/false", or a line is not returned and the need for core dumps is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Vulnerability Number

V-257803

Documentable

False

Rule Version

RHEL-09-213040

Severity Override Guidance

Verify RHEL 9 disables storing core dumps.

Check the status of the "kernel.core_pattern" kernel parameter with the following command:

$ sudo sysctl kernel.core_pattern
kernel.core_pattern = |/bin/false

If "kernel.core_pattern" is not set to "|/bin/false", or a line is not returned and the need for core dumps is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Check Content Reference

M

Target Key

5551