linux-kernel - Re: [PATCH v2] Bluetooth: hci_event: validate skb length for unknown CC opcode

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Message-Id: 
 <176132700750.4002741.10364505901519162594.git-patchwork-notify@kernel.org>
Date: Fri, 24 Oct 2025 17:30:07 +0000
From: patchwork-bot+bluetooth@...nel.org
To: Raphael Pinsonneault-Thibeault <rpthibeault@...il.com>
Cc: marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com,
 linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
 syzbot+a9a4bedfca6aa9d7fa24@...kaller.appspotmail.com,
 linux-kernel-mentees@...ts.linux.dev, skhan@...uxfoundation.org,
 david.hunter.linux@...il.com, khalid@...nel.org
Subject: Re: [PATCH v2] Bluetooth: hci_event: validate skb length for unknown
 CC
 opcode

Hello:

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

On Fri, 24 Oct 2025 12:29:10 -0400 you wrote:
> In hci_cmd_complete_evt(), if the command complete event has an unknown
> opcode, we assume the first byte of the remaining skb->data contains the
> return status. However, parameter data has previously been pulled in
> hci_event_func(), which may leave the skb empty. If so, using skb->data[0]
> for the return status uses un-init memory.
> 
> The fix is to check skb->len before using skb->data.
> 
> [...]

Here is the summary with links:
  - [v2] Bluetooth: hci_event: validate skb length for unknown CC opcode
    https://git.kernel.org/bluetooth/bluetooth-next/c/a91f1b634866

You are awesome, thank you!
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