Return-path: Received: from mail-la0-f54.google.com ([209.85.215.54]:34572 "EHLO mail-la0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754360AbbEOGsN (ORCPT ); Fri, 15 May 2015 02:48:13 -0400 Received: by laat2 with SMTP id t2so104759546laa.1 for ; Thu, 14 May 2015 23:48:11 -0700 (PDT) MIME-Version: 1.0 Date: Fri, 15 May 2015 09:48:11 +0300 Message-ID: (sfid-20150515_084819_998708_F401717F) Subject: mac80211 drops packet with old IV after rekeying From: Emmanuel Grumbach To: linux-wireless Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Someone opened a bug [1] about Intel devices. He reports that we drop packets after rekeying. I am not an expert about all the security stuff, but the submitter says that the bug occurs on any mac80211 device. The AP is running openWRT. I don't really have the time to learn all the security stuff, so I thought I'd let everybody know about this bug since after all, it is affecting all mac80211 devices. Not sure at all the bug is in mac80211, it might very well be in the AP. The submitter invested lots of time in root causing the bug including patching wireshark to have it decrypt packets after rekeying. I'd be glad if someone could take a look. If not, I'll have someone from our team to look at it, but I don't know how long it will take... Thanks. [1] https://bugzilla.kernel.org/show_bug.cgi?id=92451 Emmanuel Grumbach egrumbach@gmail.com