linux-kernel - Re: [PATCH 2/2] i2c: Fix a potential use after free

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Message-ID: <YquZ5iADDamgQ+9w@shikoro>
Date:   Thu, 16 Jun 2022 23:00:22 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Xu Wang <vulab@...as.ac.cn>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] i2c: Fix a potential use after free

On Fri, Dec 27, 2019 at 09:34:32AM +0000, Xu Wang wrote:
> Free the adap structure only after we are done using it.
> This patch just moves the put_device() down a bit to avoid the
> use after free.
> 
> Signed-off-by: Xu Wang <vulab@...as.ac.cn>

Added a comment why we reverse the order for putting our stuff and
applied to for-next, thanks! This way, we get more testing until it hits
upstream. Still, stable tag added because we want it to be backported if
all is well.


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