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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 AAE11C3524D for ; Mon, 3 Feb 2020 16:46:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7936D2051A for ; Mon, 3 Feb 2020 16:46:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580748417; bh=gZTojiRIa7PMDSQh+1NN3TajZTLFOjR4j7G0Y0vGmGI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bJAGXmhwPAzi8HF+gxnek7bvqk2NSz1aLkAxrvAxYLqtdS7LwMIHGctenQDCj+bP6 vOWK7HfgzvYctY7SU5PyIxS8rswYguiBYaqolj3FSytlGqHrKkyZe/ToikRiYqDKxR 1/+v+BrNxL2+/gO8KW3VaBYrTkgVCCjmuGDRO2Vs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729522AbgBCQ2I (ORCPT ); Mon, 3 Feb 2020 11:28:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:39306 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729489AbgBCQ1x (ORCPT ); Mon, 3 Feb 2020 11:27:53 -0500 Received: from localhost (unknown [104.132.45.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 34F6E20838; Mon, 3 Feb 2020 16:27:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580747272; bh=gZTojiRIa7PMDSQh+1NN3TajZTLFOjR4j7G0Y0vGmGI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bbSMYZ++BdWUZPe08CNSf22NEzPcQkXEZ09KK99csXI0pWM1PH3C6VrXoEfgcNmnM HgsN2A8fPkrYUCXgLZ5L4b7W/oQzIVTfLqh5a29k6iyNXYsLZpM4ilg94M2nWkUJNw 0hPlBUTTsbc4Dy27YXNF82DTSC3HcCqTbSWfjiuE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arend van Spriel , Johan Hovold , Kalle Valo Subject: [PATCH 4.14 15/89] brcmfmac: fix interface sanity check Date: Mon, 3 Feb 2020 16:19:00 +0000 Message-Id: <20200203161918.894777019@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200203161916.847439465@linuxfoundation.org> References: <20200203161916.847439465@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 commit 3428fbcd6e6c0850b1a8b2a12082b7b2aabb3da3 upstream. Make sure to use the current alternate setting when verifying the interface descriptors to avoid binding to an invalid interface. Failing to do so could cause the driver to misbehave or trigger a WARN() in usb_submit_urb() that kernels with panic_on_warn set would choke on. Fixes: 71bb244ba2fd ("brcm80211: fmac: add USB support for bcm43235/6/8 chipsets") Cc: stable # 3.4 Cc: Arend van Spriel Signed-off-by: Johan Hovold Signed-off-by: Kalle Valo Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c @@ -1333,7 +1333,7 @@ brcmf_usb_probe(struct usb_interface *in goto fail; } - desc = &intf->altsetting[0].desc; + desc = &intf->cur_altsetting->desc; if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || (desc->bInterfaceSubClass != 2) || (desc->bInterfaceProtocol != 0xff)) { @@ -1346,7 +1346,7 @@ brcmf_usb_probe(struct usb_interface *in num_of_eps = desc->bNumEndpoints; for (ep = 0; ep < num_of_eps; ep++) { - endpoint = &intf->altsetting[0].endpoint[ep].desc; + endpoint = &intf->cur_altsetting->endpoint[ep].desc; endpoint_num = usb_endpoint_num(endpoint); if (!usb_endpoint_xfer_bulk(endpoint)) continue;