STIGQter: STIG Summary: Oracle Linux 8 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

OL 8 must disable access to the network "bpf" syscall from nonprivileged processes.

DISA Rule

SV-248889r1208719_rule

Vulnerability Number

V-248889

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL08-00-040281

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure OL 8 to prevent privilege escalation through the kernel by disabling access to the bpf syscall by adding the following line to a file in the "/etc/sysctl.d" directory:

kernel.unprivileged_bpf_disabled = 1

The system configuration files must 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 8 prevents privilege escalation through the kernel by disabling access to the bpf system call with the following commands:

$ sysctl kernel.unprivileged_bpf_disabled
kernel.unprivileged_bpf_disabled = 1

If the returned line does not have a value of "1", or a line is not returned, this is a finding.

Vulnerability Number

V-248889

Documentable

False

Rule Version

OL08-00-040281

Severity Override Guidance

Verify that OL 8 prevents privilege escalation through the kernel by disabling access to the bpf system call with the following commands:

$ sysctl kernel.unprivileged_bpf_disabled
kernel.unprivileged_bpf_disabled = 1

If the returned line does not have a value of "1", or a line is not returned, this is a finding.

Check Content Reference

M

Target Key

5416