From: Kalle Valo <kvalo@codeaurora.org>
To: Arend van Spriel <arend.vanspriel@broadcom.com>
Cc: Kevin Cernekee <cernekee@chromium.org>,
franky.lin@broadcom.com, brcm80211-dev-list.pdl@broadcom.com,
linux-wireless@vger.kernel.org, mnissler@chromium.org
Subject: Re: [PATCH V2 1/3] brcmfmac: Avoid possible out-of-bounds read
Date: Tue, 12 Sep 2017 08:48:54 +0300 [thread overview]
Message-ID: <87tw08mpq1.fsf@purkki.adurom.net> (raw)
In-Reply-To: <deff51ff-40f0-ffa4-afd0-b95465c66a8e@broadcom.com> (Arend van Spriel's message of "Sun, 10 Sep 2017 20:50:35 +0200")
Arend van Spriel <arend.vanspriel@broadcom.com> writes:
> On 09-09-17 21:30, Kevin Cernekee wrote:
>> In brcmf_p2p_notify_rx_mgmt_p2p_probereq(), chanspec is assigned before
>> the length of rxframe is validated. This could lead to uninitialized
>> data being accessed (but not printed). Since we already have a
>> perfectly good endian-swapped copy of rxframe->chanspec in ch.chspec,
>> and ch.chspec is not modified by decchspec(), avoid the extra
>> assignment and use ch.chspec in the debug print.
>>
>> Suggested-by: Mattias Nissler <mnissler@chromium.org>
>> Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
>> Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
>> ---
>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>>
>> V1->V2: Clarify changelog re: whether the uninitialized data is printed.
>
> This patch and the others in this series look fine to me.
Should these go to v4.14?
--
Kalle Valo
next prev parent reply other threads:[~2017-09-12 5:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-09 19:30 [PATCH V2 1/3] brcmfmac: Avoid possible out-of-bounds read Kevin Cernekee
2017-09-09 19:30 ` [PATCH V2 2/3] brcmfmac: Delete redundant length check Kevin Cernekee
2017-09-09 19:30 ` [PATCH V2 3/3] brcmfmac: Add check for short event packets Kevin Cernekee
2017-09-12 7:45 ` [V2,3/3] " Kalle Valo
2017-09-10 18:50 ` [PATCH V2 1/3] brcmfmac: Avoid possible out-of-bounds read Arend van Spriel
2017-09-12 5:48 ` Kalle Valo [this message]
2017-09-12 7:36 ` Arend van Spriel
2017-09-12 7:47 ` Kalle Valo
2017-09-12 7:59 ` Arend van Spriel
2017-09-12 8:05 ` Kalle Valo
2017-09-12 8:18 ` Arend van Spriel
2017-09-12 12:33 ` Greg KH
2017-09-13 4:20 ` Kalle Valo
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