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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 427CDC4708E for ; Sat, 29 May 2021 15:16:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F06E611BD for ; Sat, 29 May 2021 15:16:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229741AbhE2PRf (ORCPT ); Sat, 29 May 2021 11:17:35 -0400 Received: from forward4-smtp.messagingengine.com ([66.111.4.238]:50235 "EHLO forward4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229723AbhE2PRf (ORCPT ); Sat, 29 May 2021 11:17:35 -0400 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailforward.nyi.internal (Postfix) with ESMTP id A7BC91940DC0; Sat, 29 May 2021 11:15:57 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Sat, 29 May 2021 11:15:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=gktx7R g8VDDjMw7Dw1fOhxMlREo6Gw38dqUr93JbyAU=; b=g9yBYgaDhVf1rSlvF2lLMz OK1GiiI9BlyhhlV4+J0uZhMCzWst/UrzWOlACSV9lRBAuVXiqmT9EBWxCwrCbTrw pyap8HipwdLn85iwdkBDHIUBEFj6PNCxpb00Yz2X4iu3ZSfrA0zUNmauMyrmnYY8 hVrC31IuWGNeIf3eay4i82GFog6M8FGg+LNhFWfN5/1bY1yX6sjq256tQ5Mz4E6+ nNbJAYw55ixId+GyuCkpct9Z9ZLFJwMeD1j753XZo6yaEaB2eHKtwSdVw5twuALD k7Fc48bC34DjvW/eVGx8QeUQ0wzY5MjyFIrhb5Z3daumKnumN7s8eCSc3JygT27w == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrvdekledgkeejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefuvffhfffkgggtgfesthekredttd dtlfenucfhrhhomhepoehgrhgvghhkhheslhhinhhugihfohhunhgurghtihhonhdrohhr gheqnecuggftrfgrthhtvghrnhepleelledvgeefleeltdetgedugeffgffhudffudduke egfeelgeeigeekjefhleevnecuffhomhgrihhnpehkvghrnhgvlhdrohhrghenucfkphep keefrdekiedrjeegrdeigeenucevlhhushhtvghrufhiiigvpedunecurfgrrhgrmhepmh grihhlfhhrohhmpehgrhgvgheskhhrohgrhhdrtghomh X-ME-Proxy: Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 29 May 2021 11:15:57 -0400 (EDT) Subject: FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for PCIe" failed to apply to 4.14-stable tree To: wgong@codeaurora.org, johannes.berg@intel.com, jouni@codeaurora.org Cc: From: Date: Sat, 29 May 2021 17:15:47 +0200 Message-ID: <1622301347112152@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 65c415a144ad8132b6a6d97d4a1919ffc728e2d1 Mon Sep 17 00:00:00 2001 From: Wen Gong Date: Tue, 11 May 2021 20:02:53 +0200 Subject: [PATCH] ath10k: drop fragments with multicast DA for PCIe Fragmentation is not used with multicast frames. Discard unexpected fragments with multicast DA. This fixes CVE-2020-26145. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Cc: stable@vger.kernel.org Signed-off-by: Wen Gong Signed-off-by: Jouni Malinen Link: https://lore.kernel.org/r/20210511200110.5a0bd289bda8.Idd6ebea20038fb1cfee6de924aa595e5647c9eae@changeid Signed-off-by: Johannes Berg diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index f1e5bce8b14f..cb04848ed5cb 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1768,6 +1768,16 @@ static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, return pn; } +static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, + struct sk_buff *skb, + u16 offset) +{ + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + return !is_multicast_ether_addr(hdr->addr1); +} + static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, struct sk_buff *skb, u16 peer_id, @@ -1839,7 +1849,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, bool is_decrypted; bool is_mgmt; u32 attention; - bool frag_pn_check = true; + bool frag_pn_check = true, multicast_check = true; if (skb_queue_empty(amsdu)) return; @@ -1946,13 +1956,20 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 0, enctype); - if (!frag_pn_check) { - /* Discard the fragment with invalid PN */ + if (frag) + multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, + msdu, + 0); + + if (!frag_pn_check || !multicast_check) { + /* Discard the fragment with invalid PN or multicast DA + */ temp = msdu->prev; __skb_unlink(msdu, amsdu); dev_kfree_skb_any(msdu); msdu = temp; frag_pn_check = true; + multicast_check = true; continue; }