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OL 9 must disable access to network bpf system call from nonprivileged processes.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-271748OL09-00-002409SV-271748r1117266_ruleCCI-001082medium
Description
Loading and accessing the packet filters programs and maps using the bpf() system call has the potential of revealing sensitive information about the kernel state.
STIGDate
Oracle Linux 9 Security Technical Implementation Guide2026-02-17

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-271748r1117266_chk)

Verify that OL 9 prevents privilege escalation thru 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.

Fix Text (F-75705r1091955_fix)

Configure OL 9 to prevent privilege escalation thru 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 need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command: $ sudo sysctl --system