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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 DB2AFC0650F for ; Thu, 8 Aug 2019 10:29:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B011A2173E for ; Thu, 8 Aug 2019 10:29:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B011A2173E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48186 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hvfg7-00038r-R3 for qemu-devel@archiver.kernel.org; Thu, 08 Aug 2019 06:29:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33442) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hvfff-0002IK-GI for qemu-devel@nongnu.org; Thu, 08 Aug 2019 06:29:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hvffe-00038i-Jk for qemu-devel@nongnu.org; Thu, 08 Aug 2019 06:29:23 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:42314) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hvffe-00038Q-Cp for qemu-devel@nongnu.org; Thu, 08 Aug 2019 06:29:22 -0400 Received: by mail-wr1-f65.google.com with SMTP id x1so44472866wrr.9 for ; Thu, 08 Aug 2019 03:29:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=XzdWe+OWmPnP/dShEMimTxj3Z5JfbbPKrQ4TuepH83U=; b=PsTzgHBa4IofgfGNTklQHZWlQUmRSAD8Bfspvyxvwkk7hdDBBaNcbOf5jhD3NJrbqI BBt9ryU5VspqtN5S6SooGLnUFlkyrLyM3JwC7gdHGdd9DZqSC0dWzyxwkLM9MhkYJnQC KCT2IDTqsG7S4Tsos/oPRs3YQN3ZBc8i+JfJay03tRd2Xzve5yaYPE5D4ShhPMuKu/kr +V12mv5pddAx1Tvod52pwQlADLOvVzVV28y6VNaIlFvTQ3nNvAVe/e1dHlOqrfaSB6HH VNmzCDyiYQNVnl6nPG8aIGlewMtuxLano4dpKBHC/ow4mUFlwTNEPiYkOw2uTw8Ysdbi gbQg== X-Gm-Message-State: APjAAAUk7kTDsZKpiHUEaIWrCOaBVCicArvi1JW8EAsDv5vjZKuY4hXb 7aQS9uKN3/Vooocold4rdatm6RmiTIs= X-Google-Smtp-Source: APXvYqyjVtsT6EWvFzeWa1JlKowz9/lpW5SQzUtvtGmgrQs/zSUq7MssL47btt6wQ6R6ivlcr36S/A== X-Received: by 2002:a5d:664a:: with SMTP id f10mr1567349wrw.90.1565260160847; Thu, 08 Aug 2019 03:29:20 -0700 (PDT) Received: from [192.168.1.39] (214.red-83-51-160.dynamicip.rima-tde.net. [83.51.160.214]) by smtp.gmail.com with ESMTPSA id n5sm1500044wmi.21.2019.08.08.03.29.19 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Thu, 08 Aug 2019 03:29:20 -0700 (PDT) To: P J P , Paolo Bonzini References: <20190808063340.23833-1-ppandit@redhat.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Openpgp: id=89C1E78F601EE86C867495CBA2A3FD6EDEADC0DE; url=http://pgp.mit.edu/pks/lookup?op=get&search=0xA2A3FD6EDEADC0DE Message-ID: Date: Thu, 8 Aug 2019 12:29:19 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.221.65 Subject: Re: [Qemu-devel] [PATCH] scsi: lsi: exit infinite loop while executing script (CVE-2019-12068) X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Bugs SysSec , QEMU Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 8/8/19 11:48 AM, P J P wrote: > +-- On Thu, 8 Aug 2019, Paolo Bonzini wrote --+ > | I am not sure this is worth a CVE. > > True, it is a low one, as QEMU consumes cycles on the host. > > | The kernel can cause QEMU to break, but is there a practical case in which > | an unprivileged user can do that? > > QEMU does not break, it keeps running in interruptible sleep 'S' state. > They've a reproducer wherein guest does mmio calls to trigger the issue. >From user-mode? As unprivileged user?