From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1A77E15ACF for ; Tue, 25 Jul 2023 11:01:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F8EAC433C8; Tue, 25 Jul 2023 11:01:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690282909; bh=a4wMq27j/EWZNqwO+rq1s4R6BtjIZtULFaHYmTnHUsk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o/HmmI6zyKOyryWfUl+uAmjqtMgEAkZcNRGOgORkDJA345PVfCpHXFci/RPfdBRXh Wy5F/xVrF4AIkgezz+ZE2gYs5o4sIGm99J+/CaJpIROWzFdpBdMIpR4QGUiDWiHHg7 TciXvhbmL+T93bxFwjjbLnp/HruT+O1uJII8VTbs= 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 6.1 071/183] wifi: mac80211_hwsim: Fix possible NULL dereference Date: Tue, 25 Jul 2023 12:44:59 +0200 Message-ID: <20230725104510.533276820@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104507.756981058@linuxfoundation.org> References: <20230725104507.756981058@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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/mac80211_hwsim.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 0d81098c7b45c..da5c355405f68 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/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 */ /* @@ -1753,7 +1753,7 @@ 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