linux-kernel - Re: [PATCH net v5] nfc: nci: Fix uninit-value in nci_rx

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Message-ID: <88c9c7bf-ee32-4fcd-a2ce-12a589fe844f@kernel.org>
Date: Mon, 20 May 2024 11:57:12 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ryosuke Yasuoka <ryasuoka@...hat.com>, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 syoshida@...hat.com, syzbot+d7b4dc6cd50410152534@...kaller.appspotmail.com
Subject: Re: [PATCH net v5] nfc: nci: Fix uninit-value in nci_rx_work

On 19/05/2024 11:43, Ryosuke Yasuoka wrote:
> syzbot reported the following uninit-value access issue [1]
> 
> nci_rx_work() parses received packet from ndev->rx_q. It should be
> validated header size, payload size and total packet size before
> processing the packet. If an invalid packet is detected, it should be
> silently discarded.
> 
> Fixes: d24b03535e5e ("nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet")
> Reported-and-tested-by: syzbot+d7b4dc6cd50410152534@...kaller.appspotmail.com
> Closes: https://syzkaller.appspot.com/bug?extid=d7b4dc6cd50410152534 [1]
> Signed-off-by: Ryosuke Yasuoka <ryasuoka@...hat.com>
> ---
> v5

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof