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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZFnsRJXEbajKxj3h@finisterre.sirena.org.uk>
Date:   Tue, 9 May 2023 15:46:28 +0900
From:   Mark Brown <broonie@...nel.org>
To:     Ravulapati Vishnu Vardhan Rao <quic_visr@...cinc.com>
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 Tue, May 09, 2023 at 11:43:21AM +0530, Ravulapati Vishnu Vardhan Rao wrote:

>  	val = ucontrol->value.enumerated.item[0];
> +	if (val < 0 && val > 15) {
> +		dev_err(component->dev, "Wrong value for DMIC configuration");
> +		return -EINVAL;
> +	}

This allows userspace to spam the system logs, no error should be
printed for something like this which can be trivially triggered from
userspace.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)