linux-kernel - Re: [PATCH 08/10] kexec: Disable at runtime if the kernel enforces module loading restrictions

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Message-ID: <CAMuHMdVPAEQn8wmNnagPpy45OSSzvjX-LUDx8G8eWiOFh=4sSw@mail.gmail.com>
Date:	Sun, 1 Sep 2013 10:52:45 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Matthew Garrett <matthew.garrett@...ula.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-efi@...r.kernel.org, Josh Boyer <jwboyer@...hat.com>,
	Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH 08/10] kexec: Disable at runtime if the kernel enforces
 module loading restrictions

On Mon, Aug 19, 2013 at 6:10 PM, Matthew Garrett
<matthew.garrett@...ula.com> wrote:
> kexec permits the loading and execution of arbitrary code in ring 0, which
> is something that module signing enforcement is meant to prevent. It makes
> sense to disable kexec in this situation.

Any plans for signed kexec code?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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