Re: [PATCH v2] Bluetooth: hci_serdev: Fix use-after-free in hci_uart_unregister_device()

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <[email protected]>:

On Mon, 10 Aug 2026 15:08:45 +0800 you wrote:
> hci_uart_unregister_device() frees the HCI device (hci_free_dev)
> before cancelling write_work via cancel_work_sync(). If write_work
> is executing concurrently on another CPU, it can access hu->hdev
> and write to hdev->stat after the memory has been freed.
> 
> Additionally, HCI_UART_PROTO_READY is not cleared until after
> cancel_work_sync, so the write_wakeup serdev callback can still
> schedule write_work via hci_uart_tx_wakeup() even after
> hci_free_dev has freed the device.
> 
> [...]

Here is the summary with links:
  - [v2] Bluetooth: hci_serdev: Fix use-after-free in hci_uart_unregister_device()
    https://git.kernel.org/bluetooth/bluetooth-next/c/3ea6bd320276

You are awesome, thank you!
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