STIGQter STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

RHEL 8 must restrict exposed kernel pointer addresses access.

DISA Rule

SV-230547r1184283_rule

Vulnerability Number

V-230547

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-08-040283

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure RHEL 8 to restrict exposed kernel pointer addresses access.

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

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

Add the following to the file:
kernel.kptr_restrict = 1

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

$ sudo sysctl --system

Check Contents

Verify RHEL 8 is configured to restrict exposed kernel pointer address access.

Verify the runtime status of the "kernel.kptr_restrict" kernel parameter with the following command:

$ sudo sysctl kernel.kptr_restrict
kernel.kptr_restrict = 1

If "kernel.kptr_restrict" is not set to "1" or is missing, this is a finding.

Vulnerability Number

V-230547

Documentable

False

Rule Version

RHEL-08-040283

Severity Override Guidance

Verify RHEL 8 is configured to restrict exposed kernel pointer address access.

Verify the runtime status of the "kernel.kptr_restrict" kernel parameter with the following command:

$ sudo sysctl kernel.kptr_restrict
kernel.kptr_restrict = 1

If "kernel.kptr_restrict" is not set to "1" or is missing, this is a finding.

Check Content Reference

M

Target Key

2921