RHEL 10 must enable mitigations against processor-based vulnerabilities.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281304 | RHEL-10-701020 | SV-281304r1167062_rule | CCI-002824 | medium |
| 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). Satisfies: SRG-OS-000433-GPOS-00193, SRG-OS-000095-GPOS-00049 | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281304r1167062_chk)
Verify RHEL 10 enables kernel page-table isolation with the following command:
$ sudo grubby --info=ALL | grep args | grep -v 'pti=on'
If any output is returned, this is a finding.
Check that kernel page-table isolation is enabled by default to persist in kernel updates:
$ sudo grep pti /etc/default/grub
GRUB_CMDLINE_LINUX="pti=on"
If "pti" is not set to "on", is missing, or is commented out, this is a finding.
Fix Text (F-85770r1167061_fix)
Configure RHEL 10 to enable kernel page-table isolation with the following command:
$ sudo grubby --update-kernel=ALL --args="pti=on"