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=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 AB54AC43387 for ; Fri, 11 Jan 2019 14:15:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 70EE72177B for ; Fri, 11 Jan 2019 14:15:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216144; bh=dou/STToZZ3vONY5LtHdDHOQ49X1/Y/iAoBpUPl8kkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=geg2OdKX/ycGC9lKltAIJGwkHwmdrcODdosJf39XzuUBrAvWGIhSsC8pw9ApflFMU 9xenIF2XLPwHiCZ0rmBua+wjbo22iJMCRURPJt7v4UwD6vQw1zqjF13MJ+YHpgsLnI av55syBRlLj+X+LO+aaZW09ZyU7gZza6jgZjwZ7A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387464AbfAKOPn (ORCPT ); Fri, 11 Jan 2019 09:15:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:59912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387453AbfAKOPm (ORCPT ); Fri, 11 Jan 2019 09:15:42 -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 0C1A320874; Fri, 11 Jan 2019 14:15:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216141; bh=dou/STToZZ3vONY5LtHdDHOQ49X1/Y/iAoBpUPl8kkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MGBU2FJEuHvDHBNDtMZh97UvYBa7hWtmA5OD0pKqnLhYulNSJCG+2ZfhdsFYCIoMw QiQ/NcTX9bNH2sk7Kg5NJekvStUD8H+H5B3iFTMN2m0PePOY4Zwb/uUVxBw+5yyRqj +b8RrYpD914BGo14mCYLpT8Czxp0WSO8qZABBBt8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hui Peng , Takashi Iwai Subject: [PATCH 3.18 37/47] ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks Date: Fri, 11 Jan 2019 15:08:22 +0100 Message-Id: <20190111131000.900626272@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190111130956.170952125@linuxfoundation.org> References: <20190111130956.170952125@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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-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 @@ -3356,6 +3356,9 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge } } }, + { + .ifnum = -1 + }, } } },