netdev - Re: [PATCHv2] CDC-NCM: handle incomplete transfer of MTU

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Message-Id: <20191107.152809.1266309207458297062.davem@davemloft.net>
Date:   Thu, 07 Nov 2019 15:28:09 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     oneukum@...e.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCHv2] CDC-NCM: handle incomplete transfer of MTU

From: Oliver Neukum <oneukum@...e.com>
Date: Thu,  7 Nov 2019 09:48:01 +0100

> A malicious device may give half an answer when asked
> for its MTU. The driver will proceed after this with
> a garbage MTU. Anything but a complete answer must be treated
> as an error.
> 
> V2: used sizeof as request by Alexander
> 
> Reported-and-tested-by: syzbot+0631d878823ce2411636@...kaller.appspotmail.com
> Signed-off-by: Oliver Neukum <oneukum@...e.com>

Applied and queued up for -stable, thanks.