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=-18.8 required=3.0 tests=BAYES_00,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=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 E9621C433E0 for ; Mon, 11 Jan 2021 13:50:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB00A22283 for ; Mon, 11 Jan 2021 13:50:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729238AbhAKNJf (ORCPT ); Mon, 11 Jan 2021 08:09:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:55700 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729289AbhAKNIg (ORCPT ); Mon, 11 Jan 2021 08:08:36 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 41E6D22A85; Mon, 11 Jan 2021 13:08:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1610370500; bh=/pd8RLnDeNu7p+BdZvik1txSdKxNe8f/cfwwP4ayZU8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=x2K8vVL4+BNYx3w2P6JtnlCZZ9yp6jDcXRWFBM+UGtZ/RTWmlaeME1VvuXQB7BBFk lCMgwFkPyi94t55A36kHF8eKMeSWhMiiC7+zRkRQX/77kM0ZAiiI1aDN8Z/aITVe52 U8cm2GLGRnCmlPmU5mHv+pkgiJoIlmQzxsWcEmjY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , syzbot+297d20e437b79283bf6d@syzkaller.appspotmail.com, Yuyang Du , Shuah Khan , linux-usb@vger.kernel.org Subject: [PATCH 4.19 49/77] usb: usbip: vhci_hcd: protect shift size Date: Mon, 11 Jan 2021 14:01:58 +0100 Message-Id: <20210111130038.773352134@linuxfoundation.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210111130036.414620026@linuxfoundation.org> References: <20210111130036.414620026@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: Randy Dunlap commit 718bf42b119de652ebcc93655a1f33a9c0d04b3c upstream. Fix shift out-of-bounds in vhci_hcd.c: UBSAN: shift-out-of-bounds in ../drivers/usb/usbip/vhci_hcd.c:399:41 shift exponent 768 is too large for 32-bit type 'int' Fixes: 03cd00d538a6 ("usbip: vhci-hcd: Set the vhci structure up to work") Signed-off-by: Randy Dunlap Reported-by: syzbot+297d20e437b79283bf6d@syzkaller.appspotmail.com Cc: Yuyang Du Cc: Shuah Khan Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Cc: stable Link: https://lore.kernel.org/r/20201229071309.18418-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/vhci_hcd.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -396,6 +396,8 @@ static int vhci_hub_control(struct usb_h default: usbip_dbg_vhci_rh(" ClearPortFeature: default %x\n", wValue); + if (wValue >= 32) + goto error; vhci_hcd->port_status[rhport] &= ~(1 << wValue); break; }