From patchwork Thu Apr 18 20:02:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 13635413 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 215C1C4345F for ; Thu, 18 Apr 2024 20:07:22 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rxXyQ-0001ea-CB; Thu, 18 Apr 2024 16:03:10 -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 1rxXy1-0001YN-7A; Thu, 18 Apr 2024 16:02:45 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rxXxx-0005HV-Pt; Thu, 18 Apr 2024 16:02:44 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 943B85FE0E; Thu, 18 Apr 2024 23:02:27 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id F28F3B93F4; Thu, 18 Apr 2024 23:02:24 +0300 (MSK) Received: (nullmailer pid 952857 invoked by uid 1000); Thu, 18 Apr 2024 20:02:24 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Alexander Bulekov , Gerd Hoffmann , "Michael S . Tsirkin" , Michael Tokarev Subject: [Stable-7.2.11 47/59] hw/virtio/virtio-crypto: Protect from DMA re-entrancy bugs Date: Thu, 18 Apr 2024 23:02:07 +0300 Message-Id: <20240418200224.952785-6-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=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 From: Philippe Mathieu-Daudé Replace qemu_bh_new_guarded() by virtio_bh_new_guarded() so the bus and device use the same guard. Otherwise the DMA-reentrancy protection can be bypassed. Fixes: CVE-2024-3446 Cc: qemu-stable@nongnu.org Suggested-by: Alexander Bulekov Reviewed-by: Gerd Hoffmann Acked-by: Michael S. Tsirkin Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Michael S. Tsirkin Message-Id: <20240409105537.18308-5-philmd@linaro.org> (cherry picked from commit f4729ec39ad97a42ceaa7b5697f84f440ea6e5dc) Signed-off-by: Michael Tokarev diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c index b2e0646d9a..ce995c66d8 100644 --- a/hw/virtio/virtio-crypto.c +++ b/hw/virtio/virtio-crypto.c @@ -1057,8 +1057,8 @@ static void virtio_crypto_device_realize(DeviceState *dev, Error **errp) vcrypto->vqs[i].dataq = virtio_add_queue(vdev, 1024, virtio_crypto_handle_dataq_bh); vcrypto->vqs[i].dataq_bh = - qemu_bh_new_guarded(virtio_crypto_dataq_bh, &vcrypto->vqs[i], - &dev->mem_reentrancy_guard); + virtio_bh_new_guarded(dev, virtio_crypto_dataq_bh, + &vcrypto->vqs[i]); vcrypto->vqs[i].vcrypto = vcrypto; }