From mboxrd@z Thu Jan 1 00:00:00 1970 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, 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 EB7AFC433E0 for ; Mon, 15 Mar 2021 14:41:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B6F2864F14 for ; Mon, 15 Mar 2021 14:41:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237903AbhCOOle (ORCPT ); Mon, 15 Mar 2021 10:41:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:49294 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234015AbhCOOCs (ORCPT ); Mon, 15 Mar 2021 10:02:48 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9778464E83; Mon, 15 Mar 2021 14:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816967; bh=Z6zOcIPe8C4x6d3GhlWcunOtUQl88DPN2oo6keWNqv4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IIOPrjVp7vjRI+9TPFdnVMtKqR8l5PXYUVc5tGPu1Od/czavIOYD+TXeZHTf95L7m fkpc+dRNb7oyYLSENn09W57r73G8TKaBvGq6VtNBpxxp4CuZwJPfjsitWYaGqHT4Dt CryFDHFYq8FZTbfp3NNBjiDhRTO19cb8gc0pSP8Q= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tetsuo Handa , Shuah Khan Subject: [PATCH 5.10 218/290] usbip: fix vudc to check for stream socket Date: Mon, 15 Mar 2021 14:55:11 +0100 Message-Id: <20210315135549.336845919@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135541.921894249@linuxfoundation.org> References: <20210315135541.921894249@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Greg Kroah-Hartman From: Shuah Khan commit 6801854be94fe8819b3894979875ea31482f5658 upstream. 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 Link: https://lore.kernel.org/r/387a670316002324113ac7ea1e8b53f4085d0c95.1615171203.git.skhan@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/vudc_sysfs.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- 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 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 return count; +sock_err: + sockfd_put(socket); unlock_ud: spin_unlock_irq(&udc->ud.lock); unlock: