From patchwork Mon May 16 19:36:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 573239 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 A06C5C4332F for ; Mon, 16 May 2022 20:13:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346806AbiEPUMD (ORCPT ); Mon, 16 May 2022 16:12:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350772AbiEPUBk (ORCPT ); Mon, 16 May 2022 16:01:40 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B5633FDA8; Mon, 16 May 2022 12:55:48 -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 ams.source.kernel.org (Postfix) with ESMTPS id 9BD51B81614; Mon, 16 May 2022 19:55:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF4F1C385AA; Mon, 16 May 2022 19:55:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652730937; bh=z1xGkviBQ2FOGy3TPlU9X8IBjkMBTFmQhrxx6TChBBM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e8ATGDb0uXkWuiamJpLWIf210n9uTADvejJy7wQHf6vmUDecBmPR2iTCos6DZfhDz dclbr1eixvWXjo5zPCQQdLY8BzJaFha5WUG9l7CJXAwgV7qeDqkHMzodrea4dlZ2X1 ak2WBU/7mYcLM1t3iYZ6OJ3sGWV6rh5qsSP3XwrY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mark Brown , Sasha Levin Subject: [PATCH 5.17 053/114] ASoC: max98090: Reject invalid values in custom control put() Date: Mon, 16 May 2022 21:36:27 +0200 Message-Id: <20220516193627.017827203@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193625.489108457@linuxfoundation.org> References: <20220516193625.489108457@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mark Brown [ Upstream commit 2fbe467bcbfc760a08f08475eea6bbd4c2874319 ] The max98090 driver has a custom put function for some controls which can only be updated in certain circumstances which makes no effort to validate that input is suitable for the control, allowing out of spec values to be written to the hardware and presented to userspace. Fix this by returning an error when invalid values are written. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220420193454.2647908-1-broonie@kernel.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/max98090.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index b45ec35cd63c..6d9261346842 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -413,6 +413,9 @@ static int max98090_put_enab_tlv(struct snd_kcontrol *kcontrol, val = (val >> mc->shift) & mask; + if (sel < 0 || sel > mc->max) + return -EINVAL; + *select = sel; /* Setting a volume is only valid if it is already On */