netdev - Re: [PATCH v0] nfc: nci: add flush

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Message-ID: <86da471e-b18f-94e2-64a9-e0f3417ade60@linaro.org>
Date:   Wed, 13 Apr 2022 08:57:53 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Lin Ma <linma@....edu.cn>, davem@...emloft.net, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, mudongliangabcd@...il.com
Subject: Re: [PATCH v0] nfc: nci: add flush_workqueue to prevent uaf

On 12/04/2022 18:04, Lin Ma wrote:
> Our detector found a concurrent use-after-free bug when detaching an
> NCI device. The main reason for this bug is the unexpected scheduling
> between the used delayed mechanism (timer and workqueue).
> 
> The race can be demonstrated below:
> 

Thanks!

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

Best regards,
Krzysztof