From nobody Sun Sep 28 17:40:23 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1757437187; cv=none; d=zohomail.com; s=zohoarc; b=AKE+tU1bTq8xg52SBZk2uEvfoLw8V02kPuq1FPNGneZIJ2j0sCY39lPHLi3BfJ6Xr3OzN6v28qDXY5I1fIx2zQ39QNlOcu1i8A2CvaWMSu9t+S1KwfusdvDjHN7oW1sQVadvFk5CIvNakSTtu7UtmJ9eFVwgtWlZV2oFetVzaY8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757437187; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=6SarWNkkPipfzaVswdxaKtk5JouDS/oxPAKWbBzRnR0=; b=gWRqgNtYfjW084L05prpoLc8vifEEm2knpO4aCmUMb6IKDkLz8E6slFN5FqH6wJYpL1xX9E8EQwzO2On58fsCryUIg17KZImk61qxltwDEHInGqgKrye7cI+R1LUtQIOJp5x+T3o7vPjKGsriZSgHo/eB1iDPeicDhTVH5s9jt0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 175743718722436.72372772832716; Tue, 9 Sep 2025 09:59:47 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uw1gO-0007DR-6Q; Tue, 09 Sep 2025 12:59:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uw1fp-0006bm-Kt for qemu-devel@nongnu.org; Tue, 09 Sep 2025 12:58:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uw1fh-0007gv-A4 for qemu-devel@nongnu.org; Tue, 09 Sep 2025 12:58:29 -0400 Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-217-ChUqEFRSPUiZLeigq4nuJw-1; Tue, 09 Sep 2025 12:58:15 -0400 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 69458180028C; Tue, 9 Sep 2025 16:58:14 +0000 (UTC) Received: from toolbx.redhat.com (unknown [10.42.28.45]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 328311800447; Tue, 9 Sep 2025 16:58:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1757437098; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6SarWNkkPipfzaVswdxaKtk5JouDS/oxPAKWbBzRnR0=; b=eyhWqfJAKWhKqxnMAjrpPPZQBUS7FnSju9gdh7/TcmndElExyXsudBp04FK/kKFYsYPzzD 8jwrky6ys5FhSbNbF5jd1bEi8WWIyIfrMUjVuqJKlinLezQytKPPUawrXmjZOcUhfP8h5M oveEwS28CVE8WxgbKDXskKMIDfx5OFo= X-MC-Unique: ChUqEFRSPUiZLeigq4nuJw-1 X-Mimecast-MFC-AGG-ID: ChUqEFRSPUiZLeigq4nuJw_1757437094 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: "Michael S. Tsirkin" , Paolo Bonzini , Peter Maydell , Stefan Hajnoczi , Markus Armbruster , Thomas Huth , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH 15/15] docs: expand security docs with info about secure/insecure markers Date: Tue, 9 Sep 2025 17:57:26 +0100 Message-ID: <20250909165726.3814465-16-berrange@redhat.com> In-Reply-To: <20250909165726.3814465-1-berrange@redhat.com> References: <20250909165726.3814465-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1757437214684124100 The explicit 'secure' or 'insecure' markers will take priority over the general "virtualization" vs "non-virtualization" use case classfication. Signed-off-by: Daniel P. Berrang=C3=A9 --- docs/system/security.rst | 41 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/docs/system/security.rst b/docs/system/security.rst index f2092c8768..15cffc2685 100644 --- a/docs/system/security.rst +++ b/docs/system/security.rst @@ -49,6 +49,47 @@ Bugs affecting the non-virtualization use case are not c= onsidered security bugs at this time. Users with non-virtualization use cases must not rely = on QEMU to provide guest isolation or any security guarantees. =20 +Security status reporting +''''''''''''''''''''''''' + +QEMU is progressively working to annotate object types to explicitly state +whether they are considered to provide a security boundary or not. + +When the `require-secure=3Dyes` parameter is given to the `-machine` argum= ent +attempts to use any type which is not explicitly considered secure will +result in an error. + +When the `prohibit-insecure=3Dyes` parameter is given to the `-machine` ar= gument +attempts to use any type which is explicitly considered insecure will resu= lt +in an error. + +This gives three effective levels of control over the security + + * default: any type can be used + * `prohibit-insecure=3Dyes`: only exclude explicitly insecure types, allow + those which have no security statement, or which are explicitly secure + * `require-secure=3Dyes`: only allow explicitly secure types, exclude tho= se + which have no security statement, or which are explicitly insecure + +Violations of the requested policy will result in QEMU preventing the laun= ch +of the VM, or preventing hot-add of the device in the monitor. + +When considering whether to treat a flaw as a security issue, the following +criteria will be used + + * Type marked 'secure': eligible for security process with embargo where + applicable + * Type marked 'insecure': ineligible for security process, will be triaged + on the public mailing list / bug trackers + * Type with no security statement: "Virtualization" vs "Non-Virtualizatio= n" + use case will be used as a guide to decide on handling process, evaluat= ed + upon bug report + +Machine type security status can be queried using '-machine help' or the +QMP 'query-machines' command. + +Device type security status can be queried using '-device help'. + Architecture ------------ =20 --=20 2.50.1