netdev - Re: [PATCH AUTOSEL 4.19 14/60] mwifiex: Abort at too short BSS descriptor element

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Message-ID: <20190710145112.GX10104@sasha-vm>
Date:   Wed, 10 Jul 2019 10:51:12 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Brian Norris <briannorris@...omium.org>
Cc:     Linux Kernel <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>, Takashi Iwai <tiwai@...e.de>,
        Kalle Valo <kvalo@...eaurora.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        "<netdev@...r.kernel.org>" <netdev@...r.kernel.org>
Subject: Re: [PATCH AUTOSEL 4.19 14/60] mwifiex: Abort at too short BSS
 descriptor element

On Fri, Jun 28, 2019 at 03:58:49PM -0700, Brian Norris wrote:
>On Wed, Jun 26, 2019 at 5:49 PM Sasha Levin <sashal@...nel.org> wrote:
>>
>> From: Takashi Iwai <tiwai@...e.de>
>>
>> [ Upstream commit 685c9b7750bfacd6fc1db50d86579980593b7869 ]
>>
>> Currently mwifiex_update_bss_desc_with_ie() implicitly assumes that
>> the source descriptor entries contain the enough size for each type
>> and performs copying without checking the source size.  This may lead
>> to read over boundary.
>>
>> Fix this by putting the source size check in appropriate places.
>>
>> Signed-off-by: Takashi Iwai <tiwai@...e.de>
>> Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>
>For the record, this fixup is still aiming for 5.2, correcting some
>potential mistakes in this patch:
>
>63d7ef36103d mwifiex: Don't abort on small, spec-compliant vendor IEs
>
>So you might want to hold off a bit, and grab them both.

I see that 63d7ef36103d didn't make it into 5.2, so I'll just drop this
for now.

--
Thanks,
Sasha