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OL 9 must restrict exposed kernel pointer addresses access.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-271747OL09-00-002408SV-271747r1117266_ruleCCI-001082medium
Description
Exposing kernel pointers (through procfs or "seq_printf()") exposes kernel writeable structures, which may contain functions pointers. If a write vulnerability occurs in the kernel, allowing write access to any of this structure, the kernel can be compromised. This option disallows any program without the CAP_SYSLOG capability to get the addresses of kernel pointers by replacing them with "0". Satisfies: SRG-OS-000132-GPOS-00067, SRG-OS-000433-GPOS-00192
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-271747r1117266_chk)

Verify that OL 9 restricts access to exposed kernel pointers with the following command: $ sysctl kernel.kptr_restrict kernel.kptr_restrict = 1

Fix Text (F-75704r1091952_fix)

Configure OL 9 to prevent the leak of kernel pointers to unprivileged users. Add or edit the following line in /etc/sysctl.d/99-sysctl.conf system configuration file: kernel.kptr_restrict = 1 Reload settings from all system configuration files with the following command: $ sudo sysctl --system