From: Matthias May <matthias.may@neratec.com>
To: Johannes Berg <johannes@sipsolutions.net>,
Emmanuel Grumbach <egrumbach@gmail.com>,
voncken <cedric.voncken@acksys.fr>
Cc: linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: Mac80211 : Wpa rekeying issue
Date: Tue, 5 Jan 2016 11:54:27 +0100 [thread overview]
Message-ID: <568BA0E3.5080905@neratec.com> (raw)
In-Reply-To: <1451987939.12357.18.camel@sipsolutions.net>
On 05/01/16 10:58, Johannes Berg wrote:
> On Tue, 2016-01-05 at 10:47 +0100, Matthias May wrote:
>
>>
>> We've encountered exactly this problem in a mix of devices where one
>> applies key material faster than the other. (ath9k and aquilla)
>> As a workaround we check on the STA if we are authorized when
>> updating/checking CCMP. (see attached patches)
>>
>
> Those don't really seem safe to use either.
>
> johannes
>
Not safe as in "access to stuff which has to be locked", or not safe as
in "a CCMP replay attack is possible"?
When changing this we argumented that since we are not really connected
yet, a CCMP replay attack doesn't really make sense.
Matthias
next prev parent reply other threads:[~2016-01-05 10:54 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 13:01 Mac80211 : Wpa rekeying issue Cedric VONCKEN
2015-12-29 14:19 ` Emmanuel Grumbach
2015-12-29 15:23 ` voncken
2015-12-31 8:12 ` voncken
2015-12-31 8:41 ` Emmanuel Grumbach
2015-12-31 10:15 ` voncken
2015-12-31 15:25 ` Ben Greear
2016-01-05 9:19 ` Johannes Berg
2016-01-05 9:47 ` Matthias May
2016-01-05 9:58 ` Johannes Berg
2016-01-05 10:54 ` Matthias May [this message]
2016-01-05 15:50 ` Johannes Berg
2016-01-06 9:09 ` Matthias May
2016-01-07 21:06 ` Johannes Berg
2016-01-07 21:15 ` Johannes Berg
2016-01-12 11:38 ` Emmanuel Grumbach
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