From patchwork Mon Mar 8 03:53:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuah Khan X-Patchwork-Id: 12121363 Return-Path: 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 5ADEDC4332D for ; Mon, 8 Mar 2021 03:54:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4629264DE5 for ; Mon, 8 Mar 2021 03:54:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234017AbhCHDx5 (ORCPT ); Sun, 7 Mar 2021 22:53:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234016AbhCHDxg (ORCPT ); Sun, 7 Mar 2021 22:53:36 -0500 Received: from mail-il1-x136.google.com (mail-il1-x136.google.com [IPv6:2607:f8b0:4864:20::136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDA6AC061762 for ; Sun, 7 Mar 2021 19:53:36 -0800 (PST) Received: by mail-il1-x136.google.com with SMTP id h18so7650075ils.2 for ; Sun, 07 Mar 2021 19:53:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=jfBcYPaGqJRmNnRXl3kKKp++fKO4JboST8Ge5jyVPcc=; b=iP3vnqBgO6g6UBsdc6FNQ+TgtCTXWzIxph2blsbQPe1q30swpPVPYVEQl0rTYoIYBt BlFHVhYXfTLbMtmmMc8e9+am1JdGY3Xco4L2nt6ZYwb0q99AgZxbdBBzVEosDCxYBulw SV1z3TJfcBQ19neLuD9ikHlZPOOH1BHV0SvGY= 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=jfBcYPaGqJRmNnRXl3kKKp++fKO4JboST8Ge5jyVPcc=; b=mT760zfBXDifPQtDZYxlpUuCjB8pmQGYSFoq+kEDFT6slJkt6+hOdzw1Vh9Mv1NL8w NJD8E8ewMe0nT5eqM1qoAHX0ACYa1LqnvjOrfjb9rH8472g0d4u/J3KKbguV1rrzBVkE iLivJ+fKIRPkMheZrwKHse77JT8P2gozqZn+WAUfItoRZ6k6fRxKrXM7YFQ3zKRbntut ReNy1prfGIwvdHKp+W9nYhiSsTRQTxUlqmh8JukWZnadXo8Gvt4E1XtxjOA9kABXNige 3FnlgneghNwyJnvhGaSd5+yMj9KfzxkrmNdMsxg8ZXHxH2PIU3VrMqOqrwJHdoB4p6KX nyIA== X-Gm-Message-State: AOAM531/xC1T6in4s/6Q3aQkY65GFY95MmWHGu6ZlC7fKmXiiC74Ugg+ wCs3sNe0hFXcrqqT0bIezPXrIg== X-Google-Smtp-Source: ABdhPJwhnJ6mKBfzTVpwyXBlLAIHmtw5dq2N8RMO43ddhwsVBSTwEgp0dMD0+FChqHM1OXs3mLx7uw== X-Received: by 2002:a05:6e02:e87:: with SMTP id t7mr18241869ilj.211.1615175616357; Sun, 07 Mar 2021 19:53:36 -0800 (PST) Received: from shuah-t480s.internal (c-24-9-64-241.hsd1.co.comcast.net. [24.9.64.241]) by smtp.gmail.com with ESMTPSA id g6sm5605242ilj.28.2021.03.07.19.53.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Mar 2021 19:53:36 -0800 (PST) From: Shuah Khan To: shuah@kernel.org, valentina.manea.m@gmail.com, gregkh@linuxfoundation.org Cc: Shuah Khan , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp, stable@vger.kernel.org Subject: [PATCH 3/6] usbip: fix vudc to check for stream socket Date: Sun, 7 Mar 2021 20:53:28 -0700 Message-Id: <387a670316002324113ac7ea1e8b53f4085d0c95.1615171203.git.skhan@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Fix usbip_sockfd_store() to validate the passed in file descriptor is a stream socket. If the file descriptor passed was a SOCK_DGRAM socket, sock_recvmsg() can't detect end of stream. Cc: stable@vger.kernel.org Suggested-by: Tetsuo Handa Signed-off-by: Shuah Khan --- drivers/usb/usbip/vudc_sysfs.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/usb/usbip/vudc_sysfs.c b/drivers/usb/usbip/vudc_sysfs.c index 100f680c572a..83a0c59a3de8 100644 --- a/drivers/usb/usbip/vudc_sysfs.c +++ b/drivers/usb/usbip/vudc_sysfs.c @@ -138,6 +138,13 @@ static ssize_t usbip_sockfd_store(struct device *dev, struct device_attribute *a goto unlock_ud; } + if (socket->type != SOCK_STREAM) { + dev_err(dev, "Expecting SOCK_STREAM - found %d", + socket->type); + ret = -EINVAL; + goto sock_err; + } + udc->ud.tcp_socket = socket; spin_unlock_irq(&udc->ud.lock); @@ -177,6 +184,8 @@ static ssize_t usbip_sockfd_store(struct device *dev, struct device_attribute *a return count; +sock_err: + sockfd_put(socket); unlock_ud: spin_unlock_irq(&udc->ud.lock); unlock: