STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must enable hardening for the Berkeley Packet Filter (BPF) just-in-time compiler.

DISA Rule

SV-271768r1092016_rule

Vulnerability Number

V-271768

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL09-00-002430

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure OL 9 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

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system

Check Contents

Verify that OL 9 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.

Vulnerability Number

V-271768

Documentable

False

Rule Version

OL09-00-002430

Severity Override Guidance

Verify that OL 9 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 Content Reference

M

Target Key

5680