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RHEL 10 must disable access to the network bpf system call from nonprivileged processes.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-281335RHEL-10-800030SV-281335r1167155_ruleCCI-001082medium
Description
Loading and accessing the packet filters programs and maps using the bpf() system call has the potential to reveal sensitive information about the kernel state.
STIGDate
Red Hat Enterprise Linux 10 Security Technical Implementation Guide2026-03-11

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

SEA-03.2Application Partitioning
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (19) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-3Access Enforcement
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AU-9Protection of Audit Information
1.00
CM-5(1)Automated Access Enforcement and Audit Records
1.00
CM-5(3)Signed Components
1.00
CM-5(6)Limit Library Privileges
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
IA-5(2)Public Key-based Authentication
1.00
SC-2Separation of System and User Functionality
1.00

+9 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.13.3
1.00
CCI1 mapping
CCI-001082
1.00

Details

Check Text (C-281335r1167155_chk)

Verify RHEL 10 prevents privilege escalation through the kernel by disabling access to the bpf system call. Check the status of the "kernel.unprivileged_bpf_disabled" kernel parameter with the following command: $ sysctl kernel.unprivileged_bpf_disabled kernel.unprivileged_bpf_disabled = 1 If "kernel.unprivileged_bpf_disabled" is not set to "1" or is missing, this is a finding.

Fix Text (F-85801r1167154_fix)

Configure RHEL 10 to prevent privilege escalation through the kernel by disabling access to the bpf system call. Create the drop-in file if it does not already exist: $ sudo vi /etc/sysctl.d/99-kernel_unprivileged_bpf_disabled Add the following line to the file: kernel.unprivileged_bpf_disabled = 1 Reload settings from all system configuration files with the following command: $ sudo sysctl --system