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=-10.0 required=3.0 tests=BAYES_00,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 13871C433F2 for ; Tue, 14 Jul 2020 19:07:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E698721D79 for ; Tue, 14 Jul 2020 19:07:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594753665; bh=iYiwePp934ix+9yWuEcbluFpzpyu+MCl53X7RGFu3GI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WTCul+5AGAq+kOnOdRjpajYQC5XZDo8FIMUM9ufio53hq2/zODszRi26yrRnt0yY3 joBSYVtsOLjL56QOaDKSv55VJt1KIX7Vu8n5LPxWnpVWkEZxBX1bJJZ8nJKTQGknzo xZ1lsjhkLzXljQrXDyU+WwidFZZ3GAHo1T2UQKmM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730287AbgGNTHp (ORCPT ); Tue, 14 Jul 2020 15:07:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:47974 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729940AbgGNSvb (ORCPT ); Tue, 14 Jul 2020 14:51:31 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 BF4F222B3F; Tue, 14 Jul 2020 18:51:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594752691; bh=iYiwePp934ix+9yWuEcbluFpzpyu+MCl53X7RGFu3GI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WCsDOaRlfrtX+Gr1tfgm2ZZLF9l32FapPl7epXLLU4ZR8TzDbHFFTMmmde63+4zKc kY+84QulODv+jhb+LixBe5LRbOi3eCzjISw1/Kak5aTh0g/6nXSSCCdkPCVm2nwYe6 tUUo4Jo0sQANEk5PTOlHlRpJjBA1kA6m/Ac1KKQA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, xidongwang , Takashi Iwai Subject: [PATCH 5.4 072/109] ALSA: opl3: fix infoleak in opl3 Date: Tue, 14 Jul 2020 20:44:15 +0200 Message-Id: <20200714184108.996334909@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200714184105.507384017@linuxfoundation.org> References: <20200714184105.507384017@linuxfoundation.org> User-Agent: quilt/0.66 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 From: xidongwang commit ad155712bb1ea2151944cf06a0e08c315c70c1e3 upstream. The stack object “info” in snd_opl3_ioctl() has a leaking problem. It has 2 padding bytes which are not initialized and leaked via “copy_to_user”. Signed-off-by: xidongwang Cc: Link: https://lore.kernel.org/r/1594006058-30362-1-git-send-email-wangxidong_97@163.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/drivers/opl3/opl3_synth.c | 2 ++ 1 file changed, 2 insertions(+) --- a/sound/drivers/opl3/opl3_synth.c +++ b/sound/drivers/opl3/opl3_synth.c @@ -91,6 +91,8 @@ int snd_opl3_ioctl(struct snd_hwdep * hw { struct snd_dm_fm_info info; + memset(&info, 0, sizeof(info)); + info.fm_mode = opl3->fm_mode; info.rhythm = opl3->rhythm; if (copy_to_user(argp, &info, sizeof(struct snd_dm_fm_info)))