BaselineWatch
Apply as published
Desk
Your fleet and your work Fleetyour releases and the hardware they run onTriagewhat needs a decisionWatchlistthe products and platforms you runSaved searchesthe lists you come back to
This instance Sourceswhat is read, how often, under what termsDigestthe daily or weekly summary, and alerts
How it is drawn Appearancethe look and the colour schemeBrandingthe mark this instance wears
Owner sign-in

Linux RHEL-10-701010

DISA STIG RHEL-10-701010 (CAT II): RHEL 10 must clear memory when it is freed to prevent use-after-free attacks.

DISA STIG recommends

RHEL-10-701010 CAT II

RHEL 10 must clear memory when it is freed to prevent use-after-free attacks.

NIST SP 800-53: SC-3

Check

Verify RHEL 10 is configured so that the current GRUB2 configuration mitigates use-after-free vulnerabilities by employing memory poisoning. Check that the current GRUB2 configuration mitigates use-after-free vulnerabilities by employing memory poisoning with the following command: $ sudo grubby --info=ALL | grep args | grep -v init_on_free=1 If any output is returned, this is a finding. Check that page poisoning is enabled by default to persist in kernel updates with the following command: $ sudo grep grub_cmdline_linux /etc/default/grub GRUB_CMDLINE_LINUX="... init_on_free=1" If "init_on_free=1" is missing or commented out, this is a finding.

Fix

Configure RHEL 10 to enable "init_on_free" with the following command: $ sudo grubby --update-kernel=ALL --args="init_on_free=1"

Our decision

Apply as published

No decision recorded: the recommendation stands. The owner signs in to change it.

All Linux decisions · The Linux baseline · The Linux test plan