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Subject: Re: [PATCH net v4] net: nfc: nci: Add parameter validation for packet
 data
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <175922100601.1892773.12754446584125259059.git-patchwork-notify@kernel.org>
Date: Tue, 30 Sep 2025 08:30:06 +0000
References: <20250925132846.213425-1-deepak.sharma.472935@gmail.com>
In-Reply-To: <20250925132846.213425-1-deepak.sharma.472935@gmail.com>
To: Deepak Sharma <deepak.sharma.472935@gmail.com>
Cc: krzk@kernel.org, vadim.fedorenko@linux.dev, linville@tuxdriver.com,
 kuba@kernel.org, edumazet@google.com, juraj@sarinay.com, pabeni@redhat.com,
 horms@kernel.org, netdev@vger.kernel.org, stable@vger.kernel.org,
 linux-kernel-mentees@lists.linux.dev, david.hunter.linux@gmail.com,
 skhan@linuxfoundation.org,
 syzbot+740e04c2a93467a0f8c8@syzkaller.appspotmail.com

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Thu, 25 Sep 2025 18:58:46 +0530 you wrote:
> Syzbot reported an uninitialized value bug in nci_init_req, which was
> introduced by commit 5aca7966d2a7 ("Merge tag
> 'perf-tools-fixes-for-v6.17-2025-09-16' of
> git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools").
> 
> This bug arises due to very limited and poor input validation
> that was done at nic_valid_size(). This validation only
> validates the skb->len (directly reflects size provided at the
> userspace interface) with the length provided in the buffer
> itself (interpreted as NCI_HEADER). This leads to the processing
> of memory content at the address assuming the correct layout
> per what opcode requires there. This leads to the accesses to
> buffer of `skb_buff->data` which is not assigned anything yet.
> 
> [...]

Here is the summary with links:
  - [net,v4] net: nfc: nci: Add parameter validation for packet data
    https://git.kernel.org/netdev/net/c/9c328f54741b

You are awesome, thank you!
-- 
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