From patchwork Thu Sep 29 11:03:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isak Westin X-Patchwork-Id: 610668 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2CF7C433FE for ; Thu, 29 Sep 2022 11:04:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235234AbiI2LEQ (ORCPT ); Thu, 29 Sep 2022 07:04:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235198AbiI2LEM (ORCPT ); Thu, 29 Sep 2022 07:04:12 -0400 Received: from voyager.loytec.com (voyager.loytec.com [88.198.4.4]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13DF012BD8F for ; Thu, 29 Sep 2022 04:04:10 -0700 (PDT) Received: from 212-17-98-152.static.upcbusiness.at ([212.17.98.152] helo=lexx.office.loytec.com) by voyager.loytec.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1odrKr-0007Jb-E8 for linux-bluetooth@vger.kernel.org; Thu, 29 Sep 2022 13:04:09 +0200 Received: from loytec-dev-vm.delta.corp ([10.101.25.21]) by lexx.office.loytec.com (8.15.2/8.15.2/Some OS 1.2.3-4.5) with ESMTP id 28TB45CG3109252; Thu, 29 Sep 2022 13:04:07 +0200 From: Isak Westin To: linux-bluetooth@vger.kernel.org Cc: Isak Westin Subject: [PATCH BlueZ 2/4] mesh: Ignore SNB with invalid IV Index values Date: Thu, 29 Sep 2022 13:03:42 +0200 Message-Id: <20220929110344.26130-3-isak.westin@loytec.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220929110344.26130-1-isak.westin@loytec.com> References: <20220929110344.26130-1-isak.westin@loytec.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 212.17.98.152 X-SA-Exim-Mail-From: isak.westin@loytec.com X-SA-Exim-Scanned: No (on voyager.loytec.com); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org If we are in IV update in progress state, and receive a Secure Network beacon with an IV index equal to last known IV index + 1, and IV update flag set to 1, it should be ignored. See MshPRFv1.0.1 section 3.10.5. --- mesh/net.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mesh/net.c b/mesh/net.c index dc3d1fd80..c225fdb9a 100644 --- a/mesh/net.c +++ b/mesh/net.c @@ -2671,6 +2671,10 @@ static bool update_iv_ivu_state(struct mesh_net *net, uint32_t iv_index, if (iv_index == net->iv_index) return false; + /* Ignore beacon with invalid IV index value */ + if (net->iv_update && iv_index == net->iv_index + 1) + return false; + if (!net->iv_update) { l_debug("iv_upd_state = IV_UPD_UPDATING"); net->iv_upd_state = IV_UPD_UPDATING;