From patchwork Thu Oct 26 07:06:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 13437294 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 3B5B4C25B70 for ; Thu, 26 Oct 2023 07:08:21 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qvuSL-0002tH-6H; Thu, 26 Oct 2023 03:07:01 -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 1qvuSI-0002sm-Qq for qemu-devel@nongnu.org; Thu, 26 Oct 2023 03:06:58 -0400 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qvuSG-0001Gh-Q4 for qemu-devel@nongnu.org; Thu, 26 Oct 2023 03:06:58 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4SGH0R3s3tz4wcc; Thu, 26 Oct 2023 18:06:47 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4SGH0K6kcrz4wcd; Thu, 26 Oct 2023 18:06:41 +1100 (AEDT) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , "Denis V . Lunev" , Kevin Wolf , Hanna Reitz , Stefan Weil , Paolo Bonzini , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , Eduardo Habkost , "Maciej S . Szmigiero" , Fam Zheng , Juan Quintela , Peter Xu , Fabiano Rosas , Leonardo Bras , =?utf-8?q?C=C3=A9dric_Le_Goater?= Subject: [PATCH v2 0/3] vfio/pci: Fix buffer overrun when writing the VF token Date: Thu, 26 Oct 2023 09:06:33 +0200 Message-ID: <20231026070636.1165037-1-clg@redhat.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=sG9D=GI=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_MED=-2.3, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hello, This series fixes a buffer overrun in VFIO. The buffer used in vfio_realize() by qemu_uuid_unparse() is too small, UUID_FMT_LEN lacks one byte for the trailing NUL. Instead of adding + 1, as done elsewhere, the changes introduce a UUID_STR_LEN define for the correct size and use it where required. Thanks, C. Changes in v2: - removal of UUID_FMT_LEN Cédric Le Goater (3): util/uuid: Add UUID_STR_LEN definition vfio/pci: Fix buffer overrun when writing the VF token util/uuid: Remove UUID_FMT_LEN include/qemu/uuid.h | 2 +- block/parallels-ext.c | 2 +- block/vdi.c | 2 +- hw/core/qdev-properties-system.c | 2 +- hw/hyperv/vmbus.c | 4 ++-- hw/vfio/pci.c | 2 +- migration/savevm.c | 4 ++-- tests/unit/test-uuid.c | 2 +- util/uuid.c | 2 +- 9 files changed, 11 insertions(+), 11 deletions(-)