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=-10.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 5D0E7C43444 for ; Fri, 11 Jan 2019 14:29:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2EEAE2063F for ; Fri, 11 Jan 2019 14:29:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216944; bh=rAC1GLbHPM54+IRdk1ypLAcc9ZtQ/GYR/YNvW0QHbHc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QW65BH/JgjfknaQRm4J+vDT6XsoCvkbLdYbbCoI4qe+G57MdaoU+SNEPc0aw58kpx PiWR2qv9lrO6YbmBcRBHTeDT95nLEleHhTThPI1uwdjEzG+uMC1a2FhDR9c0m4JPpO v7jKaJkfGi4Xwefds/aB1lWtuKGzR7a8cj9XULoU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388638AbfAKO3C (ORCPT ); Fri, 11 Jan 2019 09:29:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:47886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388637AbfAKO3C (ORCPT ); Fri, 11 Jan 2019 09:29:02 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (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 38EC12063F; Fri, 11 Jan 2019 14:29:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216941; bh=rAC1GLbHPM54+IRdk1ypLAcc9ZtQ/GYR/YNvW0QHbHc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BzPwZLxTzOr3xp1aRDApU2X31CMOp+emPZDgOtNzljJrzXP9y/q4JihSIO6CcW4lo pTG5WfPSpKbRVQ1FaR6AeMtmifs7GaiUDeXEfEkaPcZ9k5g3hwuMbo1VN6Pd73OvlN Tk0Ag/tdpo8EKpxFuBg2rgW/FgzjRczNuzztrEZU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hui Peng , Takashi Iwai Subject: [PATCH 4.9 47/63] ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks Date: Fri, 11 Jan 2019 15:14:50 +0100 Message-Id: <20190111131053.317407681@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190111131046.387528003@linuxfoundation.org> References: <20190111131046.387528003@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hui Peng commit cbb2ebf70daf7f7d97d3811a2ff8e39655b8c184 upstream. In `create_composite_quirk`, the terminating condition of for loops is `quirk->ifnum < 0`. So any composite quirks should end with `struct snd_usb_audio_quirk` object with ifnum < 0. for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) { ..... } the data field of Bower's & Wilkins PX headphones usb device device quirks do not end with {.ifnum = -1}, wihch may result in out-of-bound read. This Patch fix the bug by adding an ending quirk object. Fixes: 240a8af929c7 ("ALSA: usb-audio: Add a quirck for B&W PX headphones") Signed-off-by: Hui Peng Cc: Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/usb/quirks-table.h | 3 +++ 1 file changed, 3 insertions(+) --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -3321,6 +3321,9 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge } } }, + { + .ifnum = -1 + }, } } },