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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9613FC001DE for ; Tue, 25 Jul 2023 10:56:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232922AbjGYK4n (ORCPT ); Tue, 25 Jul 2023 06:56:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232560AbjGYK4V (ORCPT ); Tue, 25 Jul 2023 06:56:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6DEAE4C10 for ; Tue, 25 Jul 2023 03:53:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7E0A06165C for ; Tue, 25 Jul 2023 10:53:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90BB5C433C7; Tue, 25 Jul 2023 10:53:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690282412; bh=wKXr/dlvuwhoqG7NTqfII2N83LeUQF7/ue+SLfqzCUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2B8a3ZErK4DlgXbnNLMH6aECF/tDOeDrkN0lv1hfhGBdTGJ28mhUxUm6s/CFzC6XZ +E8ioq9VrtuTtrSecIsIGAjsI/lwD0Jz0qAhHFu09IWavmnwLi5QbeMRskxrzaR4Ix N0M1qkDhGDAUqext987WKJgVCfd8S9pCj46kSLM0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ilan Peer , Gregory Greenman , Johannes Berg , Sasha Levin Subject: [PATCH 6.4 120/227] wifi: mac80211_hwsim: Fix possible NULL dereference Date: Tue, 25 Jul 2023 12:44:47 +0200 Message-ID: <20230725104519.772935768@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104514.821564989@linuxfoundation.org> References: <20230725104514.821564989@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ilan Peer [ Upstream commit 0cc80943ef518a1c51a1111e9346d1daf11dd545 ] In a call to mac80211_hwsim_select_tx_link() the sta pointer might be NULL, thus need to check that it is not NULL before accessing it. Signed-off-by: Ilan Peer Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230604120651.f4d889fc98c4.Iae85f527ed245a37637a874bb8b8c83d79812512@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/virtual/mac80211_hwsim.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/virtual/mac80211_hwsim.c b/drivers/net/wireless/virtual/mac80211_hwsim.c index 89c7a1420381d..ed5af63025979 100644 --- a/drivers/net/wireless/virtual/mac80211_hwsim.c +++ b/drivers/net/wireless/virtual/mac80211_hwsim.c @@ -4,7 +4,7 @@ * Copyright (c) 2008, Jouni Malinen * Copyright (c) 2011, Javier Lopez * Copyright (c) 2016 - 2017 Intel Deutschland GmbH - * Copyright (C) 2018 - 2022 Intel Corporation + * Copyright (C) 2018 - 2023 Intel Corporation */ /* @@ -1864,7 +1864,7 @@ mac80211_hwsim_select_tx_link(struct mac80211_hwsim_data *data, WARN_ON(is_multicast_ether_addr(hdr->addr1)); - if (WARN_ON_ONCE(!sta->valid_links)) + if (WARN_ON_ONCE(!sta || !sta->valid_links)) return &vif->bss_conf; for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) { -- 2.39.2