From owner-freebsd-arch@freebsd.org Sat Jan 6 19:55:17 2018 Return-Path: Delivered-To: freebsd-arch@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 873CDDB8C72; Sat, 6 Jan 2018 19:55:17 +0000 (UTC) (envelope-from jmg@gold.funkthat.com) Received: from gold.funkthat.com (gate2.funkthat.com [208.87.223.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "gate2.funkthat.com", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6A0587CD63; Sat, 6 Jan 2018 19:55:17 +0000 (UTC) (envelope-from jmg@gold.funkthat.com) Received: from gold.funkthat.com (localhost [127.0.0.1]) by gold.funkthat.com (8.15.2/8.15.2) with ESMTPS id w06JtBre047913 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sat, 6 Jan 2018 11:55:11 -0800 (PST) (envelope-from jmg@gold.funkthat.com) Received: (from jmg@localhost) by gold.funkthat.com (8.15.2/8.15.2/Submit) id w06JtBG9047912; Sat, 6 Jan 2018 11:55:11 -0800 (PST) (envelope-from jmg) Date: Sat, 6 Jan 2018 11:55:11 -0800 From: John-Mark Gurney To: Freddie Cash Cc: Freebsd Security , FreeBSD Hackers , "freebsd-arch@freebsd.org" Subject: Re: Intel hardware bug Message-ID: <20180106195510.GH75576@funkthat.com> Mail-Followup-To: Freddie Cash , Freebsd Security , FreeBSD Hackers , "freebsd-arch@freebsd.org" References: <20180105191145.404BC335@spqr.komquats.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Operating-System: FreeBSD 11.0-RELEASE-p7 amd64 X-PGP-Fingerprint: D87A 235F FB71 1F3F 55B7 ED9B D5FF 5A51 C0AC 3D65 X-Files: The truth is out there X-URL: https://www.funkthat.com/ X-Resume: https://www.funkthat.com/~jmg/resume.html X-TipJar: bitcoin:13Qmb6AeTgQecazTWph4XasEsP7nGRbAPE X-to-the-FBI-CIA-and-NSA: HI! HOW YA DOIN? can i haz chizburger? User-Agent: Mutt/1.6.1 (2016-04-27) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (gold.funkthat.com [127.0.0.1]); Sat, 06 Jan 2018 11:55:11 -0800 (PST) X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Jan 2018 19:55:17 -0000 Freddie Cash wrote this message on Fri, Jan 05, 2018 at 11:53 -0800: > Spectre (aka CVE-2017-5715 and CVE-2017-5753) is the issue that affects all > CPUs (Intel, AMD, ARM, IBM, Oracle, etc) and allows userland processes to > read memory assigned to other userland processes (but does NOT give access > to kernel memory). No, Spectre does not allow one userland process to read another userland process's memory.. It allows an attacker to read any memory within the same process.. -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."