linux-kernel - Re: [PATCH v2] Bluetooth: fix dangling sco_conn and use-after-free in sco_sock

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Date:   Tue, 29 Mar 2022 11:40:11 +0000
From:   patchwork-bot+bluetooth@...nel.org
To:     Ying Hsu <yinghsu@...omium.org>
Cc:     marcel@...tmann.org, chromeos-bluetooth-upstreaming@...omium.org,
        syzbot+2bef95d3ab4daa10155b@...kaller.appspotmail.com,
        josephsih@...omium.org, davem@...emloft.net,
        desmondcheongzx@...il.com, kuba@...nel.org,
        johan.hedberg@...il.com, luiz.dentz@...il.com, pabeni@...hat.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2] Bluetooth: fix dangling sco_conn and use-after-free in
 sco_sock_timeout

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Marcel Holtmann <marcel@...tmann.org>:

On Sat, 26 Mar 2022 07:09:28 +0000 you wrote:
> Connecting the same socket twice consecutively in sco_sock_connect()
> could lead to a race condition where two sco_conn objects are created
> but only one is associated with the socket. If the socket is closed
> before the SCO connection is established, the timer associated with the
> dangling sco_conn object won't be canceled. As the sock object is being
> freed, the use-after-free problem happens when the timer callback
> function sco_sock_timeout() accesses the socket. Here's the call trace:
> 
> [...]

Here is the summary with links:
  - [v2] Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout
    https://git.kernel.org/bluetooth/bluetooth-next/c/300cf0bfb43e

You are awesome, thank you!
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