From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07143ECDFB0 for ; Sun, 15 Jul 2018 02:21:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A48F7208CC for ; Sun, 15 Jul 2018 02:21:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="QLSB0X8J"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="mj31qsHn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A48F7208CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732688AbeGOCmt (ORCPT ); Sat, 14 Jul 2018 22:42:49 -0400 Received: from mail-yb0-f193.google.com ([209.85.213.193]:45331 "EHLO mail-yb0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731982AbeGOCmt (ORCPT ); Sat, 14 Jul 2018 22:42:49 -0400 Received: by mail-yb0-f193.google.com with SMTP id h127-v6so14218873ybg.12 for ; Sat, 14 Jul 2018 19:21:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=DOQ6Kj/Eo9xfk2zMByIvlhHr/Gh8nSXLCEOmckhUYdA=; b=QLSB0X8Jau6GQjAkrtYSHdAMHCzePTWovUhplYQBRilCXKQkJxN9a039TsIBdei2Xn EKuHFnN86W5IdVC18R/xHJD1EMpU0lYN8NededACUc+00lDhxh+fK7S6EPsLPrbuR9X5 ebJ19rPGMolZqdFe+Xb6Tzn16oBXDM9d52wdeShWiPe0LLT4roboXIFCsvB1573GRXI+ BIVx7VM3CXqAaDKMzF7/IWvaPJ5vOTv9ybNwy5cUqIL5BpAuT8w/nis5s/F+1jNMhr+N 4gUv5s4eAgHSxTmTBLJeV8cNs6/NgzVKRMOnfbSKLPNimB3DZcxBZ0NilR8QLhwiyo6y 7DzQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=DOQ6Kj/Eo9xfk2zMByIvlhHr/Gh8nSXLCEOmckhUYdA=; b=mj31qsHnsiQtDfXv7ggklifaqw9X+Zb1VrLFh/ErCfRqmJ9iXvycB7xDFZGREy91Vz 5ORbwJxA8lmgMuR2HRpmAOP52oR8N5D4RrtxXWnbvnbMRM0lxVSNHoTp1cy0gwHXK8Bm 8DfnoOS6kRgRKAXFVDF4GVydMfY7MIRevS9Q8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=DOQ6Kj/Eo9xfk2zMByIvlhHr/Gh8nSXLCEOmckhUYdA=; b=kP6TwlLhp2kcqz9BYgQL8rY1H9k0AOewApCaU0yLFUilysT+igVQBVCIb+49/UX0n6 +q49rO28V9HRYwhQJJe4D+m5mBIBRObyDKz5R+8ieaA8+OWy8B/Vy6pgSPUFusZ4F9nJ A1lJZQcGLQupIS5/JDDKbPuxS5vr9wIUiIM+uLV/mvkCA2x2GkWWYrVwg/kAERLEMzW1 Ir41BSafS3S6jNLz/Oz50+L8J5ClDGkCGTjW557J7ngzYRDSbTSftq9awgBHfp8ArSsV vcfidpCUBVcWlclSK2h4+MLNYK/iff738QgOWXmcr8wdxMFzxXHawXuA3IdZ0WO1PntP bUcw== X-Gm-Message-State: AOUpUlG/rHpfRp4jjxmiDW50di2RkvkYLRY1xtAW4lDAb0lyIHKF3fWL tDXMbBtMUu6aaIl6o9RBCGyXh+HdfvXt4LyPMTXFpw== X-Google-Smtp-Source: AAOMgpdGhA45ZB4OzdZ5JFvYR4FamkDylEgDER5pnTRVbVoNCgUmsogAR0dFFWvF+3BAnRSsEnGLGO1Xc/BnhcjGUXY= X-Received: by 2002:a5b:b44:: with SMTP id b4-v6mr6452906ybr.463.1531621299101; Sat, 14 Jul 2018 19:21:39 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a25:6602:0:0:0:0:0 with HTTP; Sat, 14 Jul 2018 19:21:38 -0700 (PDT) In-Reply-To: <1531505163-20227-4-git-send-email-zohar@linux.vnet.ibm.com> References: <1531505163-20227-1-git-send-email-zohar@linux.vnet.ibm.com> <1531505163-20227-4-git-send-email-zohar@linux.vnet.ibm.com> From: Kees Cook Date: Sat, 14 Jul 2018 19:21:38 -0700 X-Google-Sender-Auth: 7Tba2dRe8pEuTH5jd55OA3MVX8k Message-ID: Subject: Re: [PATCH v6 3/8] ima: based on policy require signed kexec kernel images To: Mimi Zohar Cc: linux-integrity , linux-security-module , LKML , "Luis R . Rodriguez" , Eric Biederman , Kexec Mailing List , Andres Rodriguez , Greg Kroah-Hartman Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 13, 2018 at 11:05 AM, Mimi Zohar wrote: > The original kexec_load syscall can not verify file signatures, nor can > the kexec image be measured. Based on policy, deny the kexec_load > syscall. > > Signed-off-by: Mimi Zohar > Cc: Eric Biederman > Cc: Kees Cook Reviewed-by: Kees Cook -Kees -- Kees Cook Pixel Security