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From: patchwork-bot+netdevbpf@kernel.org
To: Aamir Ahmed <elb12345@hotmail.co.uk>
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
	kuba@kernel.org, pabeni@redhat.com, peter@korsgaard.com,
	n7l8m4@u.northwestern.edu, enelsonmoore@gmail.com,
	linux-usb@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v2] net: usb: catc: bound the RX packet length in catc_rx_done()
Date: Sat, 19 Sep 2026 22:50:16 +0000	[thread overview]
Message-ID: <178985821686.1485891.10612665362689761603.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <AS8P251MB00015FD7716F38C345619B56C8BB2@AS8P251MB0001.EURP251.PROD.OUTLOOK.COM>

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue, 15 Sep 2026 00:06:58 +0100 you wrote:
> catc_rx_done() walks a multi-packet URB, reading a two-byte length from
> each packet header. Its bound, pkt_len > urb->actual_length, ignores the
> header offset and compares against the whole transfer rather than the
> bytes left from pkt_start, so a crafted packet header makes
> skb_copy_to_linear_data() read past the buffer.
> 
> A length below ETH_HLEN is also accepted, including zero, and
> eth_type_trans() then reads a MAC header from the uninitialised tailroom
> of a shorter skb. The is_f5u011 branch takes its length straight from
> the transfer, so a zero-length URB reaches the same path.
> 
> [...]

Here is the summary with links:
  - [net,v2] net: usb: catc: bound the RX packet length in catc_rx_done()
    https://git.kernel.org/netdev/net/c/9d565b6b72fe

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



      parent reply	other threads:[~2026-09-19 22:51 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-14 23:06 Aamir Ahmed
2026-09-17  9:08 ` Simon Horman
2026-09-17 13:00 ` Paolo Abeni
2026-09-19 22:45   ` Jakub Kicinski
2026-09-19 22:50 ` patchwork-bot+netdevbpf [this message]

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