STIGQter: STIG Summary: SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 01 Apr 2026:

SLEM 5 must implement kptr-restrict to prevent the leaking of internal kernel addresses.

DISA Rule

SV-261272r996309_rule

Vulnerability Number

V-261272

Group Title

SRG-OS-000433-GPOS-00192

Rule Version

SLEM-05-213025

Severity

CAT II

CCI(s)

• CCI-002824 - Implement organization-defined controls to protect its memory from unauthorized code execution.

Weight

10

Fix Recommendation

Configure SLEM 5 to prevent leaking of internal kernel addresses by running the following command:

> sudo sysctl -w kernel.kptr_restrict=1

If "1" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf":

> sudo sh -c 'echo "kernel.kptr_restrict=1" >> /etc/sysctl.d/99-stig.conf'

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

> sudo sysctl --system

Check Contents

Verify SLEM 5 prevents leaking of internal kernel addresses with the following command:

> sudo sysctl kernel.kptr_restrict
kernel.kptr_restrict = 1

If the kernel parameter "kptr_restrict" is not equal to "1", or nothing is returned, this is a finding.

Vulnerability Number

V-261272

Documentable

False

Rule Version

SLEM-05-213025

Severity Override Guidance

Verify SLEM 5 prevents leaking of internal kernel addresses with the following command:

> sudo sysctl kernel.kptr_restrict
kernel.kptr_restrict = 1

If the kernel parameter "kptr_restrict" is not equal to "1", or nothing is returned, this is a finding.

Check Content Reference

M

Target Key

5596