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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 30822C47080 for ; Mon, 31 May 2021 14:20:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15A4B61375 for ; Mon, 31 May 2021 14:20:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233884AbhEaOVc (ORCPT ); Mon, 31 May 2021 10:21:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:55082 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232340AbhEaNtL (ORCPT ); Mon, 31 May 2021 09:49:11 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8D3F46142F; Mon, 31 May 2021 13:31:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1622467887; bh=3rfqlxhrh9or818ZTbuEK6qjk9t0H0vQtu/oWp/5ZiU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pK7m3fvgIodQOyMo/gp3dcjWmpwzPJlVVR27rSrKBWlJan2LVgcMHflSaKpqUNzA7 /nSPNM9xvu4eqNNp5i8mHYsZBs0avd7RjfwfRR3OQjJlDD3CRaR0Nxak4H8ucIVLmz Gk5DVaU/QD8mTZvC55qEFwFM45aKYvF1L4ckWVTg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wen Gong , Jouni Malinen , Johannes Berg Subject: [PATCH 5.10 036/252] ath10k: drop MPDU which has discard flag set by firmware for SDIO Date: Mon, 31 May 2021 15:11:41 +0200 Message-Id: <20210531130659.215132273@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210531130657.971257589@linuxfoundation.org> References: <20210531130657.971257589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wen Gong commit 079a108feba474b4b32bd3471db03e11f2f83b81 upstream. When the discard flag is set by the firmware for an MPDU, it should be dropped. This allows a mitigation for CVE-2020-24588 to be implemented in the firmware. Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049 Cc: stable@vger.kernel.org Signed-off-by: Wen Gong Signed-off-by: Jouni Malinen Link: https://lore.kernel.org/r/20210511200110.11968c725b5c.Idd166365ebea2771c0c0a38c78b5060750f90e17@changeid Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/ath/ath10k/htt_rx.c | 5 +++++ drivers/net/wireless/ath/ath10k/rx_desc.h | 14 +++++++++++++- 2 files changed, 18 insertions(+), 1 deletion(-) --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2312,6 +2312,11 @@ static bool ath10k_htt_rx_proc_rx_ind_hl fw_desc = &rx->fw_desc; rx_desc_len = fw_desc->len; + if (fw_desc->u.bits.discard) { + ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n"); + goto err; + } + /* I have not yet seen any case where num_mpdu_ranges > 1. * qcacld does not seem handle that case either, so we introduce the * same limitiation here as well. --- a/drivers/net/wireless/ath/ath10k/rx_desc.h +++ b/drivers/net/wireless/ath/ath10k/rx_desc.h @@ -1282,7 +1282,19 @@ struct fw_rx_desc_base { #define FW_RX_DESC_UDP (1 << 6) struct fw_rx_desc_hl { - u8 info0; + union { + struct { + u8 discard:1, + forward:1, + any_err:1, + dup_err:1, + reserved:1, + inspect:1, + extension:2; + } bits; + u8 info0; + } u; + u8 version; u8 len; u8 flags;