netdev - Re: [PATCH net v3] atm: Fix Use-After-Free in do_vcc

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Date: Tue, 12 Dec 2023 12:20:23 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Hyunwoo Kim <v4bel@...ori.io>
Cc: davem@...emloft.net, kuba@...nel.org, edumazet@...gle.com,
 imv4bel@...il.com, pabeni@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH net v3] atm: Fix Use-After-Free in do_vcc_ioctl

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Sat, 9 Dec 2023 04:42:10 -0500 you wrote:
> Because do_vcc_ioctl() accesses sk->sk_receive_queue
> without holding a sk->sk_receive_queue.lock, it can
> cause a race with vcc_recvmsg().
> A use-after-free for skb occurs with the following flow.
> ```
> do_vcc_ioctl() -> skb_peek()
> vcc_recvmsg() -> skb_recv_datagram() -> skb_free_datagram()
> ```
> Add sk->sk_receive_queue.lock to do_vcc_ioctl() to fix this issue.
> 
> [...]

Here is the summary with links:
  - [net,v3] atm: Fix Use-After-Free in do_vcc_ioctl
    https://git.kernel.org/netdev/net/c/24e90b9e34f9

You are awesome, thank you!
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