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 enable hardening for the Berkeley Packet Filter (BPF) just-in-time (JIT) compiler.

DISA Rule

SV-282677r1201330_rule

Vulnerability Number

V-282677

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-05-000199

Severity

CAT II

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

Configure TOSS 5 to enable hardening for the BPF JIT compiler by adding the following line to a file, in the "/etc/sysctl.d" directory:

net.core.bpf_jit_harden = 2

Reload the system configuration files for the changes to take effect.

$ sudo sysctl --system

Check Contents

Verify TOSS 5 enables hardening for the BPF JIT with the following commands:

$ sudo sysctl net.core.bpf_jit_harden

net.core.bpf_jit_harden = 2

If the returned line does not have a value of "2", or a line is not returned, this is a finding.

Check that the configuration files are present to enable this kernel parameter.

$ sudo /usr/lib/systemd/systemd-sysctl --cat-config | egrep -v '^(#|;)' | grep -F net.core.bpf_jit_harden | tail -1
net.core.bpf_jit_harden = 2

If the network parameter "net.core.bpf_jit_harden" is not equal to "2" or nothing is returned, this is a finding.

Vulnerability Number

V-282677

Documentable

False

Rule Version

TOSS-05-000199

Severity Override Guidance

Check Content Reference

Target Key

5738