STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must prevent kernel profiling by nonprivileged users.

DISA Rule

SV-282506r1200498_rule

Vulnerability Number

V-282506

Group Title

SRG-OS-000132-GPOS-00067

Rule Version

TOSS-05-000099

Severity

CAT II

CCI(s)

• CCI-001082 - Separate user functionality, including user interface services, from system management functionality.
• CCI-001090 - Prevent unauthorized and unintended information transfer via shared system resources.

Weight

10

Fix Recommendation

Configure TOSS 5 to prevent kernel profiling by nonprivileged users.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

kernel.perf_event_paranoid = 2

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

$ sudo sysctl --system

Check Contents

Verify TOSS 5 is configured to prevent kernel profiling by nonprivileged users using the following command:

$ sudo sysctl kernel.perf_event_paranoid

kernel.perf_event_paranoid = 2

If "kernel.perf_event_paranoid" is not set to "2" or is missing, this is a finding.

Vulnerability Number

V-282506

Documentable

False

Rule Version

TOSS-05-000099

Severity Override Guidance

Verify TOSS 5 is configured to prevent kernel profiling by nonprivileged users using the following command:

$ sudo sysctl kernel.perf_event_paranoid

kernel.perf_event_paranoid = 2

If "kernel.perf_event_paranoid" is not set to "2" or is missing, this is a finding.

Check Content Reference

M

Target Key

5738