Re: [PATCH v9] Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths

[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, 18 May 2026 10:49:49 +0800 you wrote:
> From: Mingyu Wang <25181214217@xxxxxxxxxxxxxxxxx>
> 
> Vulnerabilities leading to Use-After-Free (UAF) and Null Pointer
> Dereference (NPD) conditions were observed in the lifecycle management
> of hci_uart.
> 
> The primary issue arises because the workqueues (init_ready and
> write_work) are only flushed/cancelled if the HCI_UART_PROTO_READY
> flag is set during TTY close. If a hangup occurs before setup completes,
> hci_uart_tty_close() skips the teardown of these workqueues and
> proceeds to free the `hu` struct. When the scheduled work executes
> later, it blindly dereferences the freed `hu` struct.
> 
> [...]

Here is the summary with links:
  - [v9] Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths
    https://git.kernel.org/bluetooth/bluetooth-next/c/7db62a762f61

You are awesome, thank you!
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