linux-hardening - Re: [PATCH] hardening: Enable KFENCE in the hardening config

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Date: Mon, 12 Feb 2024 15:07:24 +0100
From: Matthieu Baerts <matttbe@...nel.org>
To: Marco Elver <elver@...gle.com>, Kees Cook <keescook@...omium.org>
Cc: "Gustavo A. R. Silva" <gustavoars@...nel.org>,
 linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org,
 Dmitry Vyukov <dvyukov@...gle.com>, Alexander Potapenko <glider@...gle.com>,
 kasan-dev@...glegroups.com, Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH] hardening: Enable KFENCE in the hardening config

Hi Marco,

On 12/02/2024 14:01, Marco Elver wrote:
> KFENCE is not a security mitigation mechanism (due to sampling), but has
> the performance characteristics of unintrusive hardening techniques.
> When used at scale, however, it improves overall security by allowing
> kernel developers to detect heap memory-safety bugs cheaply.

Thank you for having sent this patch!

Cheers,
Matt
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