netdev - Re: [PATCH] veth: Fix use after free in XDP

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Date:   Thu, 16 Mar 2023 04:20:17 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Shawn Bohrer <sbohrer@...udflare.com>
Cc:     toshiaki.makita1@...il.com, toke@...nel.org,
        makita.toshiaki@....ntt.co.jp, netdev@...r.kernel.org,
        bpf@...r.kernel.org, kernel-team@...udflare.com, lorenzo@...nel.org
Subject: Re: [PATCH] veth: Fix use after free in XDP_REDIRECT

Hello:

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

On Tue, 14 Mar 2023 10:33:51 -0500 you wrote:
> 718a18a0c8a67f97781e40bdef7cdd055c430996 "veth: Rework veth_xdp_rcv_skb
> in order to accept non-linear skb" introduced a bug where it tried to
> use pskb_expand_head() if the headroom was less than
> XDP_PACKET_HEADROOM.  This however uses kmalloc to expand the head,
> which will later allow consume_skb() to free the skb while is it still
> in use by AF_XDP.
> 
> [...]

Here is the summary with links:
  - veth: Fix use after free in XDP_REDIRECT
    https://git.kernel.org/netdev/net/c/7c10131803e4

You are awesome, thank you!
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