linux-kernel - Re: [PATCH net] Revert "nfc/nci: Add the inconsistency check between the input data length and count"

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Message-Id: 
 <176883230827.1426077.9411051878811984292.git-patchwork-notify@kernel.org>
Date: Mon, 19 Jan 2026 14:18:28 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Thadeu Lima de Souza Cascardo <cascardo@...lia.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, eadavis@...com,
 davem@...emloft.net, krzk@...nel.org, bongsu.jeon@...sung.com,
 kernel-dev@...lia.com
Subject: Re: [PATCH net] Revert "nfc/nci: Add the inconsistency check between
 the
 input data length and count"

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Tue, 13 Jan 2026 17:24:58 -0300 you wrote:
> This reverts commit 068648aab72c9ba7b0597354ef4d81ffaac7b979.
> 
> NFC packets may have NUL-bytes. Checking for string length is not a correct
> assumption here. As long as there is a check for the length copied from
> copy_from_user, all should be fine.
> 
> The fix only prevented the syzbot reproducer from triggering the bug
> because the packet is not enqueued anymore and the code that triggers the
> bug is not exercised.
> 
> [...]

Here is the summary with links:
  - [net] Revert "nfc/nci: Add the inconsistency check between the input data length and count"
    https://git.kernel.org/netdev/net/c/f40ddcc0c0ca

You are awesome, thank you!
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