RHEL 10 must enable mitigations against processor-based vulnerabilities.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-281304 | SRG-OS-000433-GPOS-00193 | RHEL-10-701020 | SV-281304r1167062_rule | 2026-03-11 | 1 |
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
ℹ️ Check
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
Configure RHEL 10 to enable kernel page-table isolation with the following command:
$ sudo grubby --update-kernel=ALL --args="pti=on"