From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758545Ab3BUUdE (ORCPT ); Thu, 21 Feb 2013 15:33:04 -0500 Received: from cavan.codon.org.uk ([93.93.128.6]:34354 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759528Ab3BUUdA (ORCPT ); Thu, 21 Feb 2013 15:33:00 -0500 Date: Thu, 21 Feb 2013 20:32:54 +0000 From: Matthew Garrett To: Vivek Goyal Cc: Linus Torvalds , Peter Jones , David Howells , Josh Boyer , Kees Cook , keyrings@linux-nfs.org, Linux Kernel Mailing List Subject: Re: [GIT PULL] Load keys from signed PE binaries Message-ID: <20130221203254.GA25166@srcf.ucam.org> References: <30665.1361461678@warthog.procyon.org.uk> <20130221164244.GA19625@srcf.ucam.org> <567.1361470653@warthog.procyon.org.uk> <20130221183445.GB20629@fenchurch.internal.datastacks.com> <20130221203119.GC23427@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130221203119.GC23427@redhat.com> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 21, 2013 at 03:31:19PM -0500, Vivek Goyal wrote: > On Thu, Feb 21, 2013 at 10:56:44AM -0800, Linus Torvalds wrote: > > [..] > > So no. The PE file thing makes no sense what-so-ever. What you mention > > we can already do, and we already do it *better*. > > IIUC, PE/COFF signature verification bits can be useful for verifying > the signature of PE/COFF signed bzImage. This verification will be > required before kexec decides to load the kernel. Only if the kexec validation's being done in kernel. We'd need agreement on that before it's a justification. -- Matthew Garrett | mjg59@srcf.ucam.org