linux-kernel - Re: [PATCH v2] HID: logitech-hidpp: Check maxfield in hidpp_get_report

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Message-ID: <qp3o12sp-36rn-8p14-3679-r3np1657r70r@xreary.bet>
Date: Sat, 10 Jan 2026 10:29:49 +0100 (CET)
From: Jiri Kosina <jikos@...nel.org>
To: Günther Noack <gnoack@...gle.com>
cc: Filipe Laíns <lains@...eup.net>, 
    Bastien Nocera <hadess@...ess.net>, 
    Benjamin Tissoires <bentiss@...nel.org>, 
    Greg KH <gregkh@...uxfoundation.org>, stable@...r.kernel.org, 
    linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] HID: logitech-hidpp: Check maxfield in
 hidpp_get_report_length()

On Fri, 9 Jan 2026, Günther Noack wrote:

> Do not crash when a report has no fields.
> 
> Fake USB gadgets can send their own HID report descriptors and can define r=
> eport
> structures without valid fields.  This can be used to crash the kernel over=
>  USB.

Applied, thanks.

-- 
Jiri Kosina
SUSE Labs