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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 D768EC2D0DB for ; Fri, 24 Jan 2020 14:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A51572072C for ; Fri, 24 Jan 2020 14:24:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579875852; bh=f8Y3gsxQZnhgO1BXqPFjWZjytFZRhsoxh24M/PN4kDA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Esx8xZgrLLmM9vpNg1gMZy3i1vq0+TajNxLw/C+iepdrVCdLFCXkW85BZv0AwVzwV FNEFnq/vUbWGjQ5kuMAYsd9wfOaxG9lbse7C4cySwMEQxwjreI1XXsmIftsEO1CaWa YQcEDvW2OxAEcqjlL8BLcKT5V6IZjI7aahaqEZXk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392457AbgAXOYL (ORCPT ); Fri, 24 Jan 2020 09:24:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:44276 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387673AbgAXOWO (ORCPT ); Fri, 24 Jan 2020 09:22:14 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A672822464; Fri, 24 Jan 2020 14:22:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579875733; bh=f8Y3gsxQZnhgO1BXqPFjWZjytFZRhsoxh24M/PN4kDA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xfsP/fD6YOg6XpqXMy1s5V/tOpWVPayiL06XF58PjaYX+c1pF+mSq6zugzmV4/3Az LiriGPInO0IqEuwYnvldCSBtvj8/dRoBDEJqgQPhgMQ69pMDMasFjLxE2XCgHsBGGY /8L/wotIBsKk93e8uYi2SkBkeYUOxe5VDaB7HjWg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Johan Hovold , hayeswang , "David S . Miller" , Sasha Levin , linux-usb@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 12/18] r8152: add missing endpoint sanity check Date: Fri, 24 Jan 2020 09:21:51 -0500 Message-Id: <20200124142157.30931-12-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200124142157.30931-1-sashal@kernel.org> References: <20200124142157.30931-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Johan Hovold [ Upstream commit 86f3f4cd53707ceeec079b83205c8d3c756eca93 ] Add missing endpoint sanity check to probe in order to prevent a NULL-pointer dereference (or slab out-of-bounds access) when retrieving the interrupt-endpoint bInterval on ndo_open() in case a device lacks the expected endpoints. Fixes: 40a82917b1d3 ("net/usb/r8152: enable interrupt transfer") Cc: hayeswang Signed-off-by: Johan Hovold Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/usb/r8152.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 15dc70c118579..3c037b76a0cc8 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -4365,6 +4365,9 @@ static int rtl8152_probe(struct usb_interface *intf, return -ENODEV; } + if (intf->cur_altsetting->desc.bNumEndpoints < 3) + return -ENODEV; + usb_reset_device(udev); netdev = alloc_etherdev(sizeof(struct r8152)); if (!netdev) { -- 2.20.1