Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757358Ab2JaQ6e (ORCPT ); Wed, 31 Oct 2012 12:58:34 -0400 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:33408 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754341Ab2JaQ6a (ORCPT ); Wed, 31 Oct 2012 12:58:30 -0400 Date: Wed, 31 Oct 2012 17:03:34 +0000 From: Alan Cox To: Jiri Kosina Cc: Josh Boyer , Matthew Garrett , linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-efi@vger.kernel.org Subject: Re: [RFC] Second attempt at kernel secure boot support Message-ID: <20121031170334.59833fb1@pyramind.ukuu.org.uk> In-Reply-To: References: <1348152065-31353-1-git-send-email-mjg@redhat.com> <20121029174131.GC7580@srcf.ucam.org> <20121031155503.1aaf4c93@pyramind.ukuu.org.uk> X-Mailer: Claws Mail 3.8.1 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 776 Lines: 21 On Wed, 31 Oct 2012 16:55:04 +0100 (CET) Jiri Kosina wrote: > On Wed, 31 Oct 2012, Alan Cox wrote: > > > All this depends on your threat model. If I have physical access to > > suspend/resume your machine then you already lost. If I don't have > > physical access then I can't boot my unsigned OS to patch your S4 image > > so it doesn't matter. > > Prepare (as a root) a hand-crafted image, reboot, let the kernel resume > from that artificial image. It's not signed. It won't reboot from that image. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/