From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A4E9569B for ; Thu, 15 Dec 2022 18:12:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8409AC433EF; Thu, 15 Dec 2022 18:12:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1671127939; bh=a1DgpXuC/T5Vb4AR08jXF381digS34mHAVgIKR1cWqQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aNgWMl/2ycOgefOKmNLqn7hsk9iBpVm1e4brvEPwkvbx/EZ/S2jSnB5QMG4bTzSTb tCkWfpba+fBiRGnO6K10ujde4rtJjF0OrIeeLEEkD+pJrtLt417PpyouNUuNlGq9qE zGo+yR7J5u2jTh0Beb9wxLpYerPZuS0h4LIatsNs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mark Brown , Sasha Levin Subject: [PATCH 5.15 06/14] ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx() Date: Thu, 15 Dec 2022 19:10:42 +0100 Message-Id: <20221215172906.641809529@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221215172906.338769943@linuxfoundation.org> References: <20221215172906.338769943@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 b8a169d3b830..ece45fd654b8 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -451,6 +451,12 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, 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