From owner-freebsd-security@freebsd.org Wed Jul 10 07:07:09 2019 Return-Path: Delivered-To: freebsd-security@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 881C815CCB76 for ; Wed, 10 Jul 2019 07:07:09 +0000 (UTC) (envelope-from damian@damianek.be) Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 14BC574722 for ; Wed, 10 Jul 2019 07:07:07 +0000 (UTC) (envelope-from damian@damianek.be) Received: by mail-io1-xd31.google.com with SMTP id f4so2482287ioh.6 for ; Wed, 10 Jul 2019 00:07:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=damianek-be.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=MKjlOTufMk193dZ80Y6psYbUiqKfKSbmbNVhtZHVoJ0=; b=GbUBUk4NfCoWYUMwMm+av8C6JcAkPa3AgS9syeajArnAbLkbBLStTACuy5/ooqWoGU yhPgc2iSQUAUeAKXhYhJPkp/KljxkeIBgQi9PY+7psvZ35Bvf1+xxADDrKiA6u/U1zEJ OGX446cGlkepBKU8xC67JwIcp9Brt80dhSvep3SG+prxTwPgAVcONJrSZTKWmOuxUn9m sqtcROAZZBY8haLGWbUd7XRKBogsDNjr1+1isbCOkRBsLR+mLBPjtDK+KlQ/iaEp6UbG CgxuBVSMPAQ5jP73VB4rGvJVjbwWtdEOXJmrPeC/MIE6Aiu+xppV7iAxZFP40lrRn+de xoMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=MKjlOTufMk193dZ80Y6psYbUiqKfKSbmbNVhtZHVoJ0=; b=bHXmamlJHpQOUbQDuRU+4n/gRnUvm2BXR02eu2XLAF7T9piVn8ywLmwGTyjk8IbrtG EK520pPgsLLKCsZwLUBlMf/2stgrR2531TK6aIIjzVQHtVBPQXya4q9nyttFl2l9HFze NOH3It28eXE4Sw1lU603xiMe2hbv5eMMlVKUA5QRnqaG2t80YiQIzoi2ka/k/8RE8vJN hnkvTay8S1kkvDrlPDWFvwZ7aad/CdZhm9jQVA6FXYaWDfV+RJ4dWxlmIEqL5R2l4AI9 MYJjC9y+QnkycUr4IqwilIoRGGFFPhnYIzyZ7uozJMPwHR/BTq6L4LH7Kb1WgSWKVFYY tFaQ== X-Gm-Message-State: APjAAAVS96RnMDWcEgNA6EbOqR5608BRNiwM0py8PVxEg10q0rbQpgX1 bUREkdm0a4T6RHwtAPKo5Mb5g5qxZ2opMwbQEYBubw== X-Google-Smtp-Source: APXvYqyhfbNU1HvLZCWpoHKmmGVr79YbrYr7g3Umex+cuFyn345XJCaMF/sUzYbNoRSn/qrUJIVdZTbvmuLSyGOeGHM= X-Received: by 2002:a5d:87c6:: with SMTP id q6mr30467910ios.115.1562742427028; Wed, 10 Jul 2019 00:07:07 -0700 (PDT) MIME-Version: 1.0 From: "damian@damianek.be" Date: Wed, 10 Jul 2019 09:06:31 +0200 Message-ID: Subject: FreeBSD mds mitigation. To: freebsd-hackers@freebsd.org, freebsd-security@freebsd.org X-Rspamd-Queue-Id: 14BC574722 X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=damianek-be.20150623.gappssmtp.com header.s=20150623 header.b=GbUBUk4N; spf=pass (mx1.freebsd.org: domain of damian@damianek.be designates 2607:f8b0:4864:20::d31 as permitted sender) smtp.mailfrom=damian@damianek.be X-Spamd-Result: default: False [-5.42 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.995,0]; R_DKIM_ALLOW(-0.20)[damianek-be.20150623.gappssmtp.com:s=20150623]; FROM_DN_EQ_ADDR(1.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-security@freebsd.org]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[damianek.be]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[damianek-be.20150623.gappssmtp.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[1.3.d.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; MX_GOOD(-0.01)[alt1.aspmx.l.google.com,aspmx.l.google.com,aspmx3.googlemail.com,alt2.aspmx.l.google.com,aspmx2.googlemail.com]; IP_SCORE(-3.01)[ip: (-9.40), ipnet: 2607:f8b0::/32(-3.17), asn: 15169(-2.42), country: US(-0.06)]; NEURAL_HAM_SHORT(-0.91)[-0.907,0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Jul 2019 07:07:09 -0000 Hello FreeBSD 11.2-RELEASE-p11 CPU: Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz (2594.05-MHz K8-class CPU) sysctl hw.mds_disable was set to 3 (Automatic VERW or Software selection), HT disabled in BIOS, and i install manually latest CPU microcode from https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/ I wonder why hw.mds_disable_state shows hw.mds_disable_state: software Broadwell instead VERW? sysctl hw.mds_disable=1 causes hw.mds_disable_state: VERW These automatic selection works correctly? -- dsk damian@damianek.be