linux-kernel - Re: [PATCH] Bluetooth: HCI: fix slab-use-after-free in cmd_sync

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Date: Thu, 25 Apr 2024 16:30:33 +0000
From: patchwork-bot+bluetooth@...nel.org
To: Sungwoo Kim <iam@...g-woo.kim>
Cc: daveti@...due.edu, marcel@...tmann.org, johan.hedberg@...il.com,
 luiz.dentz@...il.com, linux-bluetooth@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Bluetooth: HCI: fix slab-use-after-free in cmd_sync_work

Hello:

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

On Thu, 25 Apr 2024 00:11:28 -0400 you wrote:
> Hello, could you review the UAF bug and its fix?
> The stack trace is at the bottom.
> 
> mgmt sync cmd could be used after freed in this scenario:
> 
> set_local_name()       ... cmd is allocated, set_name_complete() is
>                            queued in cmd_sync_work.
> hci_error_reset()      ... hci device reset.
>   hci_dev_close_sync() ... close hdev, at this point, cmd is freed.
> set_name_complete()    ... callback from cmd_sync_work. cmd->param causes UAF.
> 
> [...]

Here is the summary with links:
  - Bluetooth: HCI: fix slab-use-after-free in cmd_sync_work
    https://git.kernel.org/bluetooth/bluetooth-next/c/37dd04e4d594

You are awesome, thank you!
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