From: Oliver Neukum <oneukum@suse.com>
To: Foster Snowhill <forst@pen.gy>, Oliver Neukum <oneukum@suse.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Georgi Valkov <gvalkov@gmail.com>,
Simon Horman <horms@kernel.org>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH net-next] usbnet: ipheth: prevent OoB reads of NDP16
Date: Mon, 9 Sep 2024 16:12:03 +0200 [thread overview]
Message-ID: <7114bb16-c7cb-4521-aec8-51e35abaa00b@suse.com> (raw)
In-Reply-To: <3d5a69be-2527-41cd-b3f2-28ae86084ee7@pen.gy>
On 09.09.24 15:39, Foster Snowhill wrote:
>
> usbnet: ipheth: prevent OoB reads of NDP16
>
> In "NCM mode", the iOS device encapsulates RX (phone->computer) traffic
> in NCM Transfer Blocks (similarly to CDC NCM). However, unlike reverse
> tethering (handled by the `cdc_ncm` driver), regular tethering is not
> compliant with the CDC NCM spec, as the device is missing the necessary
> descriptors, and TX (computer->phone) traffic is not encapsulated
> at all. Thus `ipheth` implements a very limited subset of the spec with
> the sole purpose of parsing RX URBs.
Splendid. Perfect.
Regards
Oliver
prev parent reply other threads:[~2024-09-09 14:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-07 23:01 [PATCH net-next] usbnet: ipheth: prevent OoB reads of NDP16 Foster Snowhill
2024-09-09 8:47 ` Oliver Neukum
2024-09-09 9:04 ` Foster Snowhill
2024-09-09 11:04 ` Oliver Neukum
2024-09-09 13:39 ` Foster Snowhill
2024-09-09 14:12 ` Oliver Neukum [this message]
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