netdev - Re: [PATCH net v2] llc: verify mac len before reading mac header

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Date: Thu, 02 Nov 2023 05:51:27 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Willem de Bruijn <willemdebruijn.kernel@...il.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
 edumazet@...gle.com, pabeni@...hat.com, stable@...r.kernel.org,
 willemb@...gle.com, syzbot+a8c7be6dee0de1b669cc@...kaller.appspotmail.com
Subject: Re: [PATCH net v2] llc: verify mac len before reading mac header

Hello:

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

On Wed, 25 Oct 2023 19:42:38 -0400 you wrote:
> From: Willem de Bruijn <willemb@...gle.com>
> 
> LLC reads the mac header with eth_hdr without verifying that the skb
> has an Ethernet header.
> 
> Syzbot was able to enter llc_rcv on a tun device. Tun can insert
> packets without mac len and with user configurable skb->protocol
> (passing a tun_pi header when not configuring IFF_NO_PI).
> 
> [...]

Here is the summary with links:
  - [net,v2] llc: verify mac len before reading mac header
    https://git.kernel.org/netdev/net/c/7b3ba18703a6

You are awesome, thank you!
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