Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758903Ab2JaReU (ORCPT ); Wed, 31 Oct 2012 13:34:20 -0400 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:33505 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755428Ab2JaReO (ORCPT ); Wed, 31 Oct 2012 13:34:14 -0400 Date: Wed, 31 Oct 2012 17:39:19 +0000 From: Alan Cox To: Matthew Garrett Cc: Jiri Kosina , Josh Boyer , 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: <20121031173919.4fc63ddd@pyramind.ukuu.org.uk> In-Reply-To: <20121031171743.GA17652@srcf.ucam.org> References: <1348152065-31353-1-git-send-email-mjg@redhat.com> <20121029174131.GC7580@srcf.ucam.org> <20121031155503.1aaf4c93@pyramind.ukuu.org.uk> <20121031170334.59833fb1@pyramind.ukuu.org.uk> <20121031171048.GA17163@srcf.ucam.org> <20121031172121.14cc1215@pyramind.ukuu.org.uk> <20121031171743.GA17652@srcf.ucam.org> 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: 881 Lines: 22 On Wed, 31 Oct 2012 17:17:43 +0000 Matthew Garrett wrote: > On Wed, Oct 31, 2012 at 05:21:21PM +0000, Alan Cox wrote: > > On Wed, 31 Oct 2012 17:10:48 +0000 > > Matthew Garrett wrote: > > > The kernel is signed. The kernel doesn't check the signature on the > > > suspend image. > > > > Which doesn't matter. How are you going to create the tampered image in > > the first place ? > > By booting a signed kernel, not turning on swap and writing directly to > the swap partition. Ok so the actual problem is that you are signing kernels that allow the user to skip the S4 resume check ? -- 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/