STIGQter 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 loading a new kernel for later execution.

DISA Rule

SV-282630r1200870_rule

Vulnerability Number

V-282630

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-05-000100

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

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

kernel.kexec_load_disabled = 1

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

$ sudo sysctl --system

Check Contents

Verify TOSS 5 is configured to disable kernel image loading using the following command:

$ sudo sysctl kernel.kexec_load_disabled

kernel.kexec_load_disabled = 1

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

Vulnerability Number

V-282630

Documentable

False

Rule Version

TOSS-05-000100

Severity Override Guidance

Verify TOSS 5 is configured to disable kernel image loading using the following command:

$ sudo sysctl kernel.kexec_load_disabled

kernel.kexec_load_disabled = 1

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

Check Content Reference

M

Target Key

5738