linux-kernel - Re: [PATCH] Bluetooth: hci_uart: fix null-ptr-deref in hci_uart_write

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Message-Id: 
 <176903220634.1456135.14185600440761441438.git-patchwork-notify@kernel.org>
Date: Wed, 21 Jan 2026 21:50:06 +0000
From: patchwork-bot+bluetooth@...nel.org
To: Jia-Hong Su <s11242586@...il.com>
Cc: marcel@...tmann.org, luiz.dentz@...il.com,
 linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Bluetooth: hci_uart: fix null-ptr-deref in
 hci_uart_write_work

Hello:

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

On Sun, 18 Jan 2026 20:08:59 +0800 you wrote:
> hci_uart_set_proto() sets HCI_UART_PROTO_INIT before calling
> hci_uart_register_dev(), which calls proto->open() to initialize
> hu->priv. However, if a TTY write wakeup occurs during this window,
> hci_uart_tx_wakeup() may schedule write_work before hu->priv is
> initialized, leading to a NULL pointer dereference in
> hci_uart_write_work() when proto->dequeue() accesses hu->priv.
> 
> [...]

Here is the summary with links:
  - Bluetooth: hci_uart: fix null-ptr-deref in hci_uart_write_work
    https://git.kernel.org/bluetooth/bluetooth-next/c/1d8551ecf806

You are awesome, thank you!
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