linux-kernel - Re: [PATCH] mwifiex: fix unbalanced locking in mwifiex_process_country

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Message-ID: <CA+ASDXNN5=97nhN99rPneLGSQAmQ4ULS6Kim1oxCzKWNtPkWFw@mail.gmail.com>
Date:   Mon, 6 Jan 2020 14:51:02 -0800
From:   Brian Norris <briannorris@...omium.org>
To:     linux-wireless <linux-wireless@...r.kernel.org>
Cc:     Linux Kernel <linux-kernel@...r.kernel.org>,
        Ganapathi Bhat <ganapathi.bhat@....com>,
        Nishant Sarmukadam <nishants@...vell.com>,
        Amitkumar Karwar <amitkarwar@...il.com>,
        Xinming Hu <huxinming820@...il.com>,
        stable <stable@...r.kernel.org>, huangwen <huangwenabc@...il.com>
Subject: Re: [PATCH] mwifiex: fix unbalanced locking in mwifiex_process_country_ie()

On Mon, Jan 6, 2020 at 2:43 PM Brian Norris <briannorris@...omium.org> wrote:
>
> We called rcu_read_lock(), so we need to call rcu_read_unlock() before
> we return.
>
> Fixes: 3d94a4a8373b ("mwifiex: fix possible heap overflow in mwifiex_process_country_ie()")
> Cc: stable@...r.kernel.org
> Cc: huangwen <huangwenabc@...il.com>
> Cc: Ganapathi Bhat <ganapathi.bhat@....com>
> Signed-off-by: Brian Norris <briannorris@...omium.org>

I probably should have mentioned somewhere here: the bug is currently
in 5.5-rc and is being ported to -stable already (I'll try to head
that off). So this probably should have said [PATCH 5.5]. Sorry about
that.

Brian