From patchwork Mon May 16 19:36:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 573734 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 D1EA6C43219 for ; Mon, 16 May 2022 20:08:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346417AbiEPUHQ (ORCPT ); Mon, 16 May 2022 16:07:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348009AbiEPT6T (ORCPT ); Mon, 16 May 2022 15:58:19 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F63B434A5; Mon, 16 May 2022 12:50:04 -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 7D536B81614; Mon, 16 May 2022 19:50:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9DE4C385AA; Mon, 16 May 2022 19:50:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652730601; bh=z1xGkviBQ2FOGy3TPlU9X8IBjkMBTFmQhrxx6TChBBM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1qu3CSdlcV0CsXOyeEOFGjezTIo23+ZbHMdvP23dzr23DzZz14GcGmWY7ZGM45VVp 6EtKNiMlOZYDIBNDldi/HLSfwxNIWOSouzRvmuFymkr9XNBWjsq+IlTCPosbvMBQvM uHx1VEXkNgE9Q9JBjEymtlsi5Ubr8hY4v2wixzrI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mark Brown , Sasha Levin Subject: [PATCH 5.15 048/102] ASoC: max98090: Reject invalid values in custom control put() Date: Mon, 16 May 2022 21:36:22 +0200 Message-Id: <20220516193625.377871050@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193623.989270214@linuxfoundation.org> References: <20220516193623.989270214@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 */