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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F3E8C4708E for ; Tue, 6 Dec 2022 09:53:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235589AbiLFJxx (ORCPT ); Tue, 6 Dec 2022 04:53:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57118 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235440AbiLFJv6 (ORCPT ); Tue, 6 Dec 2022 04:51:58 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B68324080; Tue, 6 Dec 2022 01:51:16 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 706DA6160B; Tue, 6 Dec 2022 09:51:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 613E2C433C1; Tue, 6 Dec 2022 09:51:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1670320275; bh=7hHdQtpeJgUhhlVrjaF3QqUWI/qXbxg2b5hWeRvhBPo=; h=From:To:Cc:Subject:Date:From; b=VEj0dAFcq4EbNd/9ZH2NN4K3RG6X0C+QAkEBjxu/g2c4M5hE9Ks+/jToLIH7o9P5H dtUM1wE+iA/NaOVooB8RohVVKChf+18eLwsulZpfqrIdZInaOurjAQE5kkKWDeF2o7 WzFTGDxWeXsUvLwm7JCj4cBBbZ/tWXk4xm3WLu9cqMyhjQOPE6i6BI7wUF1AJgMexQ +oWWPY4cnrZ+3T/UB9thaQIOJQvF2opc3hO53CWRuBS4/BmgFNTinYfkNIrwB7sqs0 jY2qZ9EfN4l46SA7JAmLj9xx69cEqw4QOGfepxC5vMY/eNI0ZDxwrW0WLG7DG/lSLT JBsKFXShzCzNQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mark Brown , Sasha Levin , lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 4.19 1/5] ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx() Date: Tue, 6 Dec 2022 04:51:07 -0500 Message-Id: <20221206095112.987799-1-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Brown [ Upstream commit 97eea946b93961fffd29448dcda7398d0d51c4b2 ] The bounds checks in snd_soc_put_volsw_sx() are only being applied to the first channel, meaning it is possible to write out of bounds values to the second channel in stereo controls. Add appropriate checks. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220511134137.169575-2-broonie@kernel.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/soc-ops.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index 453b61b42dd9..00e6a6e46fe5 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -460,6 +460,12 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, if (snd_soc_volsw_is_stereo(mc)) { val_mask = mask << rshift; val2 = (ucontrol->value.integer.value[1] + min) & mask; + + if (mc->platform_max && val2 > mc->platform_max) + return -EINVAL; + if (val2 > max) + return -EINVAL; + val2 = val2 << rshift; err = snd_soc_component_update_bits(component, reg2, val_mask, -- 2.35.1