From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1D8DC10F14 for ; Thu, 3 Oct 2019 17:35:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9163720865 for ; Thu, 3 Oct 2019 17:35:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570124121; bh=ySS2nkVRZ3AUrygpTactXdqeqMMVlSOWgYwCDjj95hc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jbUVQ7FZ3l8+Ic1Ympan/kINGRkKaBajNYu1SWZ814/c28+RTwvoSAefia8086kju yDBc9yhwhOr2g66m5AmpdVlHNqKXHFCamM1BhTy2y6B0og69pql7VdLs8Giy6Ch4eN UHRspSSR9kWy7hqHbHOHVFrpSHME18eSPKaQDhPI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388447AbfJCRfU (ORCPT ); Thu, 3 Oct 2019 13:35:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:53338 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731848AbfJCQGN (ORCPT ); Thu, 3 Oct 2019 12:06:13 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7572A21A4C; Thu, 3 Oct 2019 16:06:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118772; bh=ySS2nkVRZ3AUrygpTactXdqeqMMVlSOWgYwCDjj95hc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r1XCj/U1gDZzvOO/Ya3zCOiuxLsmkPX+myWAjNrbR1JCVj58HaHrC3lrgAeQgtD1o N6OEApN+HeCIwYjeemGo/ofbW6c/NmvbC0s/ESZFTGnj81c8wAVtE6+OTQpeQQW3CU wk6guNptbfwR3ssi/KvWB6e1BZBqMwSKisTK9Pls= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Denis Kenzior , Johannes Berg Subject: [PATCH 4.9 119/129] cfg80211: Purge frame registrations on iftype change Date: Thu, 3 Oct 2019 17:54:02 +0200 Message-Id: <20191003154414.815124153@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154318.081116689@linuxfoundation.org> References: <20191003154318.081116689@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Denis Kenzior commit c1d3ad84eae35414b6b334790048406bd6301b12 upstream. Currently frame registrations are not purged, even when changing the interface type. This can lead to potentially weird situations where frames possibly not allowed on a given interface type remain registered due to the type switching happening after registration. The kernel currently relies on userspace apps to actually purge the registrations themselves, this is not something that the kernel should rely on. Add a call to cfg80211_mlme_purge_registrations() to forcefully remove any registrations left over prior to switching the iftype. Cc: stable@vger.kernel.org Signed-off-by: Denis Kenzior Link: https://lore.kernel.org/r/20190828211110.15005-1-denkenz@gmail.com Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- net/wireless/util.c | 1 + 1 file changed, 1 insertion(+) --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1051,6 +1051,7 @@ int cfg80211_change_iface(struct cfg8021 } cfg80211_process_rdev_events(rdev); + cfg80211_mlme_purge_registrations(dev->ieee80211_ptr); } err = rdev_change_virtual_intf(rdev, dev, ntype, flags, params);