Message ID | 20210903110702.588291-12-philmd@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=/uRW=NZ=nongnu.org=qemu-devel-bounces+qemu-devel=archiver.kernel.org@kernel.org> 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=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 67479C433F5 for <qemu-devel@archiver.kernel.org>; Fri, 3 Sep 2021 11:23:46 +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 07CF96108E for <qemu-devel@archiver.kernel.org>; Fri, 3 Sep 2021 11:23:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 07CF96108E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:34972 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org>) id 1mM7IP-0007ar-7L for qemu-devel@archiver.kernel.org; Fri, 03 Sep 2021 07:23:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43028) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <philmd@redhat.com>) id 1mM73M-0006Mg-OS for qemu-devel@nongnu.org; Fri, 03 Sep 2021 07:08:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:25398) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <philmd@redhat.com>) id 1mM73L-0000s1-1X for qemu-devel@nongnu.org; Fri, 03 Sep 2021 07:08:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1630667290; 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=FntGbVxFK+XtYARw6XcNLA9NRLn2kntvBlBnFrP4mzA=; b=Vd51tuVY1Z9HyXLYZPURuG/6O1RUbzks88CePnvgH9EbHUJM65nkHsc+TJjtvV2R8IHmYu 5zWiWEyym3c+cyybqLXIr7X1BlZOc9FhRFTo77AHADwTvgZi/lOAo3cokzlnvleltaVVeE iv3Z7xFMaVqOy9qeJNfAZEsM8nWXsfE= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-437-KdxWngOePBynnNJDB1-8Cg-1; Fri, 03 Sep 2021 07:08:09 -0400 X-MC-Unique: KdxWngOePBynnNJDB1-8Cg-1 Received: by mail-wm1-f72.google.com with SMTP id n16-20020a1c7210000000b002ea2ed60dc6so1719320wmc.0 for <qemu-devel@nongnu.org>; Fri, 03 Sep 2021 04:08:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=FntGbVxFK+XtYARw6XcNLA9NRLn2kntvBlBnFrP4mzA=; b=EqXaD+t24iBuiT3LpIAV0pTqt47T/MpmWR9qvOkAc84Ous0oAspB3KBqBXQRN5zDTB WfLAe2kp+MtAlhJRisBQN58ztPRkGd+fTkMjP0b+gJ+zbOPeK2WZzXqsUiGl7KdWbeHk wtJpOjFxTIhAHlaokaHCBi2b1CrL0RTLuEIwokHzdfyBFH6xYUgCFZN9v2Xn6FJW78/7 V6p/aIYtu5nxuj3FMaM9WslBrAraa92EFlMzWlL+79AtDJJR1kiJ4Wx+xEtomHY1V9wb fcishvpJozZMK6cI1bgCjhCwEjlE9tWRthBaXczzLpXDWlcSvDCcuq0HPia3TsEyCG3d bW/g== X-Gm-Message-State: AOAM532me+f8XV9VU6lTBatflntLSUROlj3ZPfsOnVKkF7qIubnxA4OL J0a4uhXFCFtWOsA3M2SxQyyWDA81zxj0iaAebB1pEAZnDJHsnhz06TPTHvJn6QrUdHOBGMV1kWO nO2KLNWj4aOFYziympndLGiHtbKyEo1kQV3FH1OjbnSCV2oQ3z/smOB5haLspMcbE X-Received: by 2002:a1c:f30b:: with SMTP id q11mr7737855wmq.91.1630667288284; Fri, 03 Sep 2021 04:08:08 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwN+kSFBVyveYXn5+sGs4JVUNV4P0ZW7WHxEXMqHi40ecnicQxkfAmkq1xp5ilgKOE4A+RKyg== X-Received: by 2002:a1c:f30b:: with SMTP id q11mr7737785wmq.91.1630667287932; Fri, 03 Sep 2021 04:08:07 -0700 (PDT) Received: from x1w.. (163.red-83-52-55.dynamicip.rima-tde.net. [83.52.55.163]) by smtp.gmail.com with ESMTPSA id j207sm4383064wmj.40.2021.09.03.04.08.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 04:08:07 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@redhat.com> To: qemu-devel@nongnu.org Subject: [PATCH 11/28] hw/hppa/machine: Replace g_memdup() by g_memdup2_qemu() Date: Fri, 3 Sep 2021 13:06:45 +0200 Message-Id: <20210903110702.588291-12-philmd@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903110702.588291-1-philmd@redhat.com> References: <20210903110702.588291-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) DKIMWL_WL_HIGH=-0.392, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 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> Cc: Fam Zheng <fam@euphon.net>, Peter Maydell <peter.maydell@linaro.org>, Li Zhijian <lizhijian@cn.fujitsu.com>, "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, Christian Schoenebeck <qemu_oss@crudebyte.com>, Yuval Shaia <yuval.shaia.ml@gmail.com>, Peter Xu <peterx@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Alexandre Iooss <erdnaxe@crans.org>, Eric Blake <eblake@redhat.com>, qemu-block@nongnu.org, Zhang Chen <chen.zhang@intel.com>, =?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org>, Helge Deller <deller@gmx.de>, David Hildenbrand <david@redhat.com>, Markus Armbruster <armbru@redhat.com>, "Gonglei \(Arei\)" <arei.gonglei@huawei.com>, Stefan Weil <sw@weilnetz.de>, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@redhat.com>, Laurent Vivier <lvivier@redhat.com>, Thomas Huth <thuth@redhat.com>, Eduardo Habkost <ehabkost@redhat.com>, Michael Roth <michael.roth@amd.com>, Richard Henderson <richard.henderson@linaro.org>, Greg Kurz <groug@kaod.org>, Alex Williamson <alex.williamson@redhat.com>, qemu-arm@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>, John Snow <jsnow@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, Kevin Wolf <kwolf@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>, Laurent Vivier <laurent@vivier.eu>, Shannon Zhao <shannon.zhaosl@gmail.com>, Hanna Reitz <hreitz@redhat.com>, qemu-ppc@nongnu.org, Igor Mammedov <imammedo@redhat.com>, Mahmoud Mandour <ma.mandourr@gmail.com> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org> |
Series |
glib: Replace g_memdup() by g_memdup2_qemu()
|
expand
|
diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c index 2a46af5bc9b..058a81e85dd 100644 --- a/hw/hppa/machine.c +++ b/hw/hppa/machine.c @@ -101,19 +101,19 @@ static FWCfgState *create_fw_cfg(MachineState *ms) val = cpu_to_le64(MIN_SEABIOS_HPPA_VERSION); fw_cfg_add_file(fw_cfg, "/etc/firmware-min-version", - g_memdup(&val, sizeof(val)), sizeof(val)); + g_memdup2_qemu(&val, sizeof(val)), sizeof(val)); val = cpu_to_le64(HPPA_TLB_ENTRIES); fw_cfg_add_file(fw_cfg, "/etc/cpu/tlb_entries", - g_memdup(&val, sizeof(val)), sizeof(val)); + g_memdup2_qemu(&val, sizeof(val)), sizeof(val)); val = cpu_to_le64(HPPA_BTLB_ENTRIES); fw_cfg_add_file(fw_cfg, "/etc/cpu/btlb_entries", - g_memdup(&val, sizeof(val)), sizeof(val)); + g_memdup2_qemu(&val, sizeof(val)), sizeof(val)); val = cpu_to_le64(HPA_POWER_BUTTON); fw_cfg_add_file(fw_cfg, "/etc/power-button-addr", - g_memdup(&val, sizeof(val)), sizeof(val)); + g_memdup2_qemu(&val, sizeof(val)), sizeof(val)); fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ms->boot_order[0]); qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
Per https://discourse.gnome.org/t/port-your-module-from-g-memdup-to-g-memdup2-now/5538 The old API took the size of the memory to duplicate as a guint, whereas most memory functions take memory sizes as a gsize. This made it easy to accidentally pass a gsize to g_memdup(). For large values, that would lead to a silent truncation of the size from 64 to 32 bits, and result in a heap area being returned which is significantly smaller than what the caller expects. This can likely be exploited in various modules to cause a heap buffer overflow. Replace g_memdup() by the safer g_memdup2_qemu() wrapper. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> --- hw/hppa/machine.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)