netdev - Re: [PATCH v4] net: nfc: Fix use-after-free in local

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Message-Id: <167367241680.28163.5038142496471587881.git-patchwork-notify@kernel.org>
Date:   Sat, 14 Jan 2023 05:00:16 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jisoo Jang <jisoo.jang@...sei.ac.kr>
Cc:     pabeni@...hat.com, krzysztof.kozlowski@...aro.org,
        netdev@...r.kernel.org, edumazet@...gle.com, kuba@...nel.org,
        dokyungs@...sei.ac.kr, linuxlovemin@...sei.ac.kr
Subject: Re: [PATCH v4] net: nfc: Fix use-after-free in local_cleanup()

Hello:

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

On Wed, 11 Jan 2023 22:19:14 +0900 you wrote:
> Fix a use-after-free that occurs in kfree_skb() called from
> local_cleanup(). This could happen when killing nfc daemon (e.g. neard)
> after detaching an nfc device.
> When detaching an nfc device, local_cleanup() called from
> nfc_llcp_unregister_device() frees local->rx_pending and decreases
> local->ref by kref_put() in nfc_llcp_local_put().
> In the terminating process, nfc daemon releases all sockets and it leads
> to decreasing local->ref. After the last release of local->ref,
> local_cleanup() called from local_release() frees local->rx_pending
> again, which leads to the bug.
> 
> [...]

Here is the summary with links:
  - [v4] net: nfc: Fix use-after-free in local_cleanup()
    https://git.kernel.org/netdev/net/c/4bb4db7f3187

You are awesome, thank you!
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