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AlmaLinux OS 9 must enable mitigations against processor-based vulnerabilities.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-269450ALMA-09-044680SV-269450r1050333_ruleCCI-002824medium
Description
Kernel page-table isolation is a kernel feature that mitigates the Meltdown security vulnerability and hardens the kernel against attempts to bypass kernel address space layout randomization (KASLR).
STIGDate
Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide2026-02-27

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) 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.

CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
DCH-01Data Protection
1.00
IAC-21Least Privilege
1.00
SEA-10Memory Protection
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (14) 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-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AU-12Audit Record Generation
1.00
AU-3(1)Additional Audit Information
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
CM-7(2)Prevent Program Execution
1.00
SC-2Separation of System and User Functionality
1.00
SC-3Security Function Isolation
1.00
SC-39Process Isolation
1.00
SC-5Denial-of-service Protection
1.00

+4 more (top 10 by confidence shown)

CCI1 mapping
CCI-002824
1.00
NIST CSF 2.00 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.

PR.DS-10
1.00

Who does this work

7 NICE work roles and 7 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-269450r1050333_chk)

Verify AlmaLinux OS 9 enables kernel page-table isolation with the following command: $ grubby --info=ALL | grep pti args="ro audit=1 selinux=1 enforcing=1 audit_backlog_limit=8192 page_poison=1 vsyscall=none slub_debug=P pti=on iommu=force resume=/dev/mapper/luks-88bf0df8-547f-4613-af07-215e5f62e9a9 rd.luks.uuid=luks-8a7154ec-8eeb-47c8-9d75-66fd4b80d665 rd.lvm.lv=rootvg/root rd.luks.uuid=luks-89bf0df8-547f-4613-af07-215e5f62e9a9 rd.lvm.lv=rootvg/swap rd.shell=0 quiet splash fips=1 boot=UUID=eda01e9b-b7e1-431b-9549-16d5dcddf665" If the "pti" entry does not equal "on", or is missing, this is a finding. Check that kernel page-table isolation is enabled by default to persist in kernel updates: $ grep pti /etc/default/grub GRUB_CMDLINE_LINUX="pti=on" If "pti" is not set to "on", is missing or commented out, this is a finding.

Fix Text (F-73382r1049728_fix)

Configure AlmaLinux OS 9 to enable kernel page-table isolation with the following command: $ grubby --update-kernel=ALL --args="pti=on" Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates: GRUB_CMDLINE_LINUX="pti=on"