Re: [PATCH v3] Bluetooth: RFCOMM: validate skb length in MCC handlers

[email protected] Thu, 28 May 2026 14:20:06 +0000

Newsgroups	dev.linux.lists.linux-kernel-mentees,org.kernel.vger.linux-bluetooth,org.kernel.vger.linux-kernel
Message-ID	<177997800664.948024.5743539938103755383.git-patchwork-notify@kernel.org>

Hello:

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

On Mon, 25 May 2026 20:04:43 +0900 you wrote:
> The RFCOMM MCC handlers cast skb->data to protocol-specific structs
> without validating skb->len first. A malicious remote device can send
> truncated MCC frames and trigger out-of-bounds reads in these handlers.
> 
> Fix this by using skb_pull_data() to validate and access the required
> data before dereferencing it.
> 
> [...]

Here is the summary with links:
  - [v3] Bluetooth: RFCOMM: validate skb length in MCC handlers
    https://git.kernel.org/bluetooth/bluetooth-next/c/a82ccb946ae5

You are awesome, thank you!
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