From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out4-smtp.messagingengine.com ([66.111.4.28]:45663 "EHLO out4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753058AbdK0RGT (ORCPT ); Mon, 27 Nov 2017 12:06:19 -0500 Subject: FAILED: patch "[PATCH] [media] cx231xx-cards: fix NULL-deref on missing association" failed to apply to 3.18-stable tree To: johan@kernel.org, andreyknvl@google.com, hans.verkuil@cisco.com, mchehab@osg.samsung.com, stable@vger.kernel.org Cc: From: Date: Mon, 27 Nov 2017 18:06:23 +0100 Message-ID: <151180238361223@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: The patch below does not apply to the 3.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From 6c3b047fa2d2286d5e438bcb470c7b1a49f415f6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 21 Sep 2017 05:40:18 -0300 Subject: [PATCH] [media] cx231xx-cards: fix NULL-deref on missing association descriptor Make sure to check that we actually have an Interface Association Descriptor before dereferencing it during probe to avoid dereferencing a NULL-pointer. Fixes: e0d3bafd0258 ("V4L/DVB (10954): Add cx231xx USB driver") Cc: stable # 2.6.30 Reported-by: Andrey Konovalov Signed-off-by: Johan Hovold Tested-by: Andrey Konovalov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index e0daa9b6c2a0..9b742d569fb5 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1684,7 +1684,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface, nr = dev->devno; assoc_desc = udev->actconfig->intf_assoc[0]; - if (assoc_desc->bFirstInterface != ifnum) { + if (!assoc_desc || assoc_desc->bFirstInterface != ifnum) { dev_err(d, "Not found matching IAD interface\n"); retval = -ENODEV; goto err_if;