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@kernel.org:

On Wed, 25 Oct 2023 19:42:38 -0400 you wrote:

From: Willem de Bruijn willemb@google.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!