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Message-Id: <168032401722.15847.13805989572906204547.git-patchwork-notify@kernel.org>
Date: Sat, 01 Apr 2023 04:40:17 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
dsahern@...nel.org, netdev@...r.kernel.org, eric.dumazet@...il.com,
syzbot+d373d60fddbdc915e666@...kaller.appspotmail.com
Subject: Re: [PATCH net] icmp: guard against too small mtu
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:
On Thu, 30 Mar 2023 17:45:02 +0000 you wrote:
> syzbot was able to trigger a panic [1] in icmp_glue_bits(), or
> more exactly in skb_copy_and_csum_bits()
>
> There is no repro yet, but I think the issue is that syzbot
> manages to lower device mtu to a small value, fooling __icmp_send()
>
> __icmp_send() must make sure there is enough room for the
> packet to include at least the headers.
>
> [...]
Here is the summary with links:
- [net] icmp: guard against too small mtu
https://git.kernel.org/netdev/net/c/7d63b6712538
You are awesome, thank you!
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