Re: [PATCH net] net: bridge: xmit: make sure we have at least eth header len bytes

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller [off-list ref]:

On Mon, 13 May 2024 13:34:19 +0300 you wrote:

syzbot triggered an uninit value[1] error in bridge device's xmit path
by sending a short (less than ETH_HLEN bytes) skb. To fix it check if
we can actually pull that amount instead of assuming.

Tested with dropwatch:
 drop at: br_dev_xmit+0xb93/0x12d0 [bridge] (0xffffffffc06739b3)
 origin: software
 timestamp: Mon May 13 11:31:53 2024 778214037 nsec
 protocol: 0x88a8
 length: 2
 original length: 2
 drop reason: PKT_TOO_SMALL

[...]

Here is the summary with links:
  - [net] net: bridge: xmit: make sure we have at least eth header len bytes
    https://git.kernel.org/netdev/net/c/8bd67ebb50c0

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