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

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-261272SLEM-05-213025SV-261272r996309_ruleCCI-002824medium
Description
Some adversaries launch attacks with the intent of executing code in nonexecutable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can either be hardware enforced or software enforced, with hardware providing the greater strength of mechanism. Examples of attacks are buffer overflow attacks.
STIGDate
SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide2025-05-08

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
DCH-01Data Protection
1.00
IAC-21Least Privilege
1.00
SEA-10Memory Protection
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (14) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AU-12Audit Record Generation
1.00
AU-3(1)Additional Audit Information
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
CM-7(2)Prevent Program Execution
1.00
SC-2Separation of System and User Functionality
1.00
SC-3Security Function Isolation
1.00
SC-39Process Isolation
1.00
SC-5Denial-of-service Protection
1.00

+4 more (top 10 by confidence shown)

CCI1 mapping
CCI-002824
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.DS-10
1.00

Who does this work

7 NICE work roles and 7 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-261272r996309_chk)

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.

Fix Text (F-64909r996308_fix)

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