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 restrict exposed kernel pointer addresses access.

DISA Rule

SV-269423r1198253_rule

Vulnerability Number

V-269423

Group Title

SRG-OS-000132-GPOS-00067

Rule Version

ALMA-09-040830

Severity

CAT II

CCI(s)

• CCI-001082 - Separate user functionality, including user interface services, from system management functionality.

Weight

10

Fix Recommendation

Configure AlmaLinux OS 9 to restrict exposed kernel pointer addresses access with the following command:

$ echo "kernel.kptr_restrict = 1" > /etc/sysctl.d/60-kptr.conf

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

$ sysctl --system

Check Contents

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

$ sysctl kernel.kptr_restrict

kernel.kptr_restrict = 1

Verify the configuration of the kernel.kptr_restrict kernel parameter with the following command:

$ /usr/lib/systemd/systemd-sysctl --cat-config | egrep -v '^(#|;)' | grep -F kernel.kptr_restrict | tail -1

kernel.kptr_restrict =1

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

Vulnerability Number

V-269423

Documentable

False

Rule Version

ALMA-09-040830

Severity Override Guidance

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

$ sysctl kernel.kptr_restrict

kernel.kptr_restrict = 1

Verify the configuration of the kernel.kptr_restrict kernel parameter with the following command:

$ /usr/lib/systemd/systemd-sysctl --cat-config | egrep -v '^(#|;)' | grep -F kernel.kptr_restrict | tail -1

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

5664