linux-kernel - Re: [PATCH 1/2] ASoC: samsung: odroid: fix an use-after-free issue for codec

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Message-ID: <CAJKOXPdGAsc=XpJXVRg+oaa1o1PXkJJ8JDAnkNkJuzJrfE_OJA@mail.gmail.com>
Date:   Tue, 16 Jul 2019 11:06:13 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Wen Yang <wen.yang99@....com.cn>
Cc:     sbkim73@...sung.com, s.nawrocki@...sung.com, lgirdwood@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        xue.zhihong@....com.cn, wang.yi59@....com.cn,
        cheng.shengyu@....com.cn
Subject: Re: [PATCH 1/2] ASoC: samsung: odroid: fix an use-after-free issue
 for codec

On Sat, 13 Jul 2019 at 05:48, Wen Yang <wen.yang99@....com.cn> wrote:
>
> The codec variable is still being used after the of_node_put() call,
> which may result in use-after-free.
>
> Fixes: bc3cf17b575a ("ASoC: samsung: odroid: Add support for secondary CPU DAI")
> Signed-off-by: Wen Yang <wen.yang99@....com.cn>
> Cc: Krzysztof Kozlowski <krzk@...nel.org>
> Cc: Sangbeom Kim <sbkim73@...sung.com>
> Cc: Sylwester Nawrocki <s.nawrocki@...sung.com>
> Cc: Liam Girdwood <lgirdwood@...il.com>
> Cc: Mark Brown <broonie@...nel.org>
> Cc: Jaroslav Kysela <perex@...ex.cz>
> Cc: Takashi Iwai <tiwai@...e.com>
> Cc: alsa-devel@...a-project.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  sound/soc/samsung/odroid.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof