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 AF2A9C4332F for ; Tue, 10 May 2022 15:46:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346419AbiEJPum (ORCPT ); Tue, 10 May 2022 11:50:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346183AbiEJPuV (ORCPT ); Tue, 10 May 2022 11:50:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8634285AE5; Tue, 10 May 2022 08:44:43 -0700 (PDT) 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 E9B0561414; Tue, 10 May 2022 15:44:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C95FC385CD; Tue, 10 May 2022 15:44:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652197482; bh=neXHOKi229Sgtbs4jWuGm4TMYdxq/uhV/QYN2mcwRGQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VU2fhX5Qvcij68RJIvRK2OVe+qgXcGXLVt/9Ct6KcEyO22MQ8htaaKLtQv5HCljEE DQEpwUTM0QdZh2qTETO9S1PFPen7Jn7LO/2UdpgUMLjl06dyxjR2ObxMtRp9xh/cHQ YXwWsyhDtJSBLpx2kcwuRpPk7c1A06Mk7VxlaEiFeNDIeS3HiZQc/K0x2cpPGCuvs1 m4gkk8wcH1osrx+Wy66bdiQ1SuGimJNxrCCDv5RW0QE+VAWmosQM6I7lyd8X6kgpka FIxvXcWT88+tuIj5nxw0Ku9eZwCOoCZTeVLaaTKWO4W4qu2ZbDrKhwSNg5gQEta4nW LrVwYeF/rV62g== 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 5.15 06/19] ASoC: ops: Validate input values in snd_soc_put_volsw_range() Date: Tue, 10 May 2022 11:44:16 -0400 Message-Id: <20220510154429.153677-6-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220510154429.153677-1-sashal@kernel.org> References: <20220510154429.153677-1-sashal@kernel.org> 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 aa22125c57f9e577f0a667e4fa07fc3fa8ca1e60 ] Check that values written via snd_soc_put_volsw_range() are within the range advertised by the control, ensuring that we don't write out of spec values to the hardware. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220423131239.3375261-1-broonie@kernel.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/soc-ops.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index ee3782ecd7e3..bd88e56cacac 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -519,7 +519,15 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; unsigned int val, val_mask; - int err, ret; + int err, ret, tmp; + + tmp = ucontrol->value.integer.value[0]; + if (tmp < 0) + return -EINVAL; + if (mc->platform_max && tmp > mc->platform_max) + return -EINVAL; + if (tmp > mc->max - mc->min + 1) + return -EINVAL; if (invert) val = (max - ucontrol->value.integer.value[0]) & mask; @@ -534,6 +542,14 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, ret = err; if (snd_soc_volsw_is_stereo(mc)) { + tmp = ucontrol->value.integer.value[1]; + if (tmp < 0) + return -EINVAL; + if (mc->platform_max && tmp > mc->platform_max) + return -EINVAL; + if (tmp > mc->max - mc->min + 1) + return -EINVAL; + if (invert) val = (max - ucontrol->value.integer.value[1]) & mask; else -- 2.35.1