linux-kernel - Re: [PATCH] USB: disable all RNDIS protocol drivers

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Message-ID: <ZKM5nbDnKnFZLOlY@rivendell>
Date:   Mon, 3 Jul 2023 23:11:57 +0200
From:   Enrico Mioso <mrkiko.rs@...il.com>
To:     Jan Engelhardt <jengelh@...i.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Kalle Valo <kvalo@...nel.org>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Maciej Żenczykowski <maze@...gle.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Andrzej Pietrasiewicz <andrzejtp2010@...il.com>,
        Jacopo Mondi <jacopo@...ndi.org>,
        Łukasz Stelmach <l.stelmach@...sung.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org,
        Ilja Van Sprundel <ivansprundel@...ctive.com>,
        Joseph Tartaro <joseph.tartaro@...ctive.com>
Subject: Re: [PATCH] USB: disable all RNDIS protocol drivers

Hi all!!

I think the rndis_host USB driver might emit a warning in the dmesg, but disabling the driver wouldn't be a good idea.
The TP-Link MR6400 V1 LTE modem and also some ZTE modems integrated in routers do use this protocol.

We may also distinguish between these cases and devices you might plug in - as they pose different risk levels.

Enrico