Re: [PATCH] Bluetooth: ISO: Reject concurrent BIS listener setup

[patchwork-bot+bluetooth]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>:

On Mon,  5 Oct 2026 00:25:48 +0800 you wrote:
> iso_sock_listen() drops the socket lock before calling iso_listen_bis()
> to preserve the hdev->lock ordering. Two concurrent listen() calls on
> the same broadcast socket can therefore both observe BT_BOUND. Caller
> A can attach connA and release the locks, then caller B can acquire
> them and attach connB before A publishes BT_LISTEN.
> 
> __iso_chan_add() checks whether connB already has a socket, but not
> whether the socket already has a connection. The second attachment
> overwrites iso_pi(sk)->conn, leaking the connA reference and leaving
> connA->sk intact. Socket teardown follows connB, so later events on
> connA can cause a stale socket access.
> 
> [...]

Here is the summary with links:
  - Bluetooth: ISO: Reject concurrent BIS listener setup
    https://git.kernel.org/bluetooth/bluetooth-next/c/555ff78fa719

You are awesome, thank you!
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