Message ID | 20240224-reuse-v7-2-29c14bcb952e@daynix.com |
---|---|
State | New |
Headers | show
Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=daynix-com.20230601.gappssmtp.com header.i=@daynix-com.20230601.gappssmtp.com header.a=rsa-sha256 header.s=20230601 header.b=ozPO0iJo; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4ThhMn0yKTz23q3 for <incoming@patchwork.ozlabs.org>; Sat, 24 Feb 2024 20:26:29 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces@nongnu.org>) id 1rdoHC-0006Ob-LZ; Sat, 24 Feb 2024 04:24:58 -0500 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 <akihiko.odaki@daynix.com>) id 1rdoHA-0006O6-Pb for qemu-devel@nongnu.org; Sat, 24 Feb 2024 04:24:57 -0500 Received: from mail-pl1-x62c.google.com ([2607:f8b0:4864:20::62c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from <akihiko.odaki@daynix.com>) id 1rdoH9-0002PR-En for qemu-devel@nongnu.org; Sat, 24 Feb 2024 04:24:56 -0500 Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-1d7881b1843so13215495ad.3 for <qemu-devel@nongnu.org>; Sat, 24 Feb 2024 01:24:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1708766693; x=1709371493; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=XAlWXKGj/Qs8kksBVXE9dWWgaRg5MiFxbRpTNiPgudE=; b=ozPO0iJomh2e8W3GZsXF4FcL5wHqPbgWJpoi04kakJBiKB6LGqe+0NudiL21gbzIOE Pzf/Pnjk+u/XZIQFxGPYaLb2D94XzvOQi47VILb+Te+NibBl2+zPwvVXFWpQl/SwMTR+ Vqv3DO0WQZpjlVa4pz9mJmpUL32vhJrp7Td02YoOf3C0YzDnYIkHnzZrarikndXBocms DfHrD+P3NRoG6eYoo26kyZVmIYj2n8+tBkFBYyPyDLA7/tz7V0tEk/R2SFnYcSrexU88 mojQA9MW7tF2UWfcqMKeil7pfeW2+mRtGka8v+brI8RshQcDvtbyqpDqJ8gXGusv9voz k1dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708766693; x=1709371493; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=XAlWXKGj/Qs8kksBVXE9dWWgaRg5MiFxbRpTNiPgudE=; b=nNgYY/vuek4+L1pk6BHWG4jMLGZ3RmvPuQotDQPEmNoZLFtRavSJw32cfINKEmKT0L 5pO4T5NL0+8I2q4FZ296BQgy7iXtF1NqkIwgLIUPqya3peEDYZ5hnpKfpFbVEt9eGb7S mH3PnA0pjUCFIrFkqP8dFd1fVdvS5P2ttAODJZMq2glPfPKQIpSYCkSAGZx7DhstsL+C AZxflTbcYZ1V6GApg4MAwdtExYMFtNaeF3Nj21lG5rLFUw/83aTcGT39dLnOh0jtp9G7 k3xAJ+hLdPdEnMeomNqstVyzU4WrNr/ZMwPfGNnHziNrOIMezO/Abdg+waU7eNc/H2N6 IGQw== X-Gm-Message-State: AOJu0YwadBSrLF5TmIGjpqwf4gDTNL2CxV+nHdYceQYSflTELcegdNKy NFdEOjem/qv3zyHIuJkLGUqdtf6UpbE6B4s2mb1L1vU5iCFWGraqKxsIf/rcDtc= X-Google-Smtp-Source: AGHT+IGbRtdYYQG2GEF/VDgDfeiO1qHT4p/K4DIg34O/4elLXo34dw2jYOWxcaNRTfgMOOuDSgtBMg== X-Received: by 2002:a17:902:bb16:b0:1dc:688e:188a with SMTP id im22-20020a170902bb1600b001dc688e188amr1926990plb.21.1708766693653; Sat, 24 Feb 2024 01:24:53 -0800 (PST) Received: from localhost ([157.82.203.206]) by smtp.gmail.com with UTF8SMTPSA id w19-20020a170902d3d300b001d911dd145esm658040plb.219.2024.02.24.01.24.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 24 Feb 2024 01:24:53 -0800 (PST) From: Akihiko Odaki <akihiko.odaki@daynix.com> Date: Sat, 24 Feb 2024 18:24:34 +0900 Subject: [PATCH v7 02/16] pcie_sriov: Validate NumVFs MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240224-reuse-v7-2-29c14bcb952e@daynix.com> References: <20240224-reuse-v7-0-29c14bcb952e@daynix.com> In-Reply-To: <20240224-reuse-v7-0-29c14bcb952e@daynix.com> To: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Alex Williamson <alex.williamson@redhat.com>, =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= <clg@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Sriram Yagnaraman <sriram.yagnaraman@est.tech>, Jason Wang <jasowang@redhat.com>, Keith Busch <kbusch@kernel.org>, Klaus Jensen <its@irrelevant.dk> Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Akihiko Odaki <akihiko.odaki@daynix.com>, qemu-stable@nongnu.org X-Mailer: b4 0.12.3 Received-SPF: none client-ip=2607:f8b0:4864:20::62c; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62c.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org |
Series |
hw/pci: SR-IOV related fixes and improvements
|
expand
|
diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c index a1fe65f5d801..da209b7f47fd 100644 --- a/hw/pci/pcie_sriov.c +++ b/hw/pci/pcie_sriov.c @@ -176,6 +176,9 @@ static void register_vfs(PCIDevice *dev) assert(sriov_cap > 0); num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF); + if (num_vfs > pci_get_word(dev->config + sriov_cap + PCI_SRIOV_TOTAL_VF)) { + return; + } dev->exp.sriov_pf.vf = g_new(PCIDevice *, num_vfs);
The guest may write NumVFs greater than TotalVFs and that can lead to buffer overflow in VF implementations. Cc: qemu-stable@nongnu.org Fixes: CVE-2024-26327 Fixes: 7c0fa8dff811 ("pcie: Add support for Single Root I/O Virtualization (SR/IOV)") Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> --- hw/pci/pcie_sriov.c | 3 +++ 1 file changed, 3 insertions(+)