From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965013AbdKBVaQ convert rfc822-to-8bit (ORCPT ); Thu, 2 Nov 2017 17:30:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60812 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964928AbdKBVaO (ORCPT ); Thu, 2 Nov 2017 17:30:14 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 27EA04E02B Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=dhowells@redhat.com Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <1509650031.3507.20.camel@linux.vnet.ibm.com> References: <1509650031.3507.20.camel@linux.vnet.ibm.com> <1509130095.3716.13.camel@linux.vnet.ibm.com> <150842463163.7923.11081723749106843698.stgit@warthog.procyon.org.uk> <150842465546.7923.6762214527898273559.stgit@warthog.procyon.org.uk> <20240.1509643356@warthog.procyon.org.uk> To: Mimi Zohar Cc: dhowells@redhat.com, linux-security-module@vger.kernel.org, gnomes@lxorguk.ukuu.org.uk, linux-efi@vger.kernel.org, matthew.garrett@nebula.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, jforbes@redhat.com Subject: Re: [PATCH 03/27] Enforce module signatures if the kernel is locked down MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Date: Thu, 02 Nov 2017 21:30:11 +0000 Message-ID: <12321.1509658211@warthog.procyon.org.uk> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Thu, 02 Nov 2017 21:30:14 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Mimi Zohar wrote: > By this point, IMA-appraisal has already verified the kernel module > signature back in kernel_read_file_from_fd(), if it was required. >  Having a key with which to verify the appended signature or requiring > an appended signature, should not be required as well. I guess I don't need to put in any support for IMA here, then, and you've taken care of it in your patchset such that it won't actually go into module_sig_check() in that case (or will at least return immediately). David