linux-kernel - Re: [PATCH] ASoC:codecs: lpass: Fix for KASAN use_after

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Date:   Tue, 9 May 2023 23:36:46 +0530
From:   VISHNUVARDHAN RAO RAVULAPATI <quic_visr@...cinc.com>
To:     Mark Brown <broonie@...nel.org>
CC:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        "moderated list:QCOM AUDIO (ASoC) DRIVERS" 
        <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC:codecs: lpass: Fix for KASAN use_after_free out of
 bounds


On 5/9/2023 8:06 PM, Mark Brown wrote:
> On Tue, May 09, 2023 at 04:02:31PM +0530, Ravulapati Vishnu Vardhan Rao wrote:
>
>>   	val = ucontrol->value.enumerated.item[0];
>> +	if (val < 0 && val > 15)
>> +		return -EINVAL;
> Srini is right that it'd be better to read the upper bound from the
> control, that way it can't geto out of sync.

Will address and resend it..

Thanks for review.