AlmaLinux OS 9 must enable mitigations against processor-based vulnerabilities.
An XCCDF Rule
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).
- ID
- SV-269450r1050333_rule
- Version
- ALMA-09-044680
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
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"