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 414BDC2BB3F for ; Wed, 15 Nov 2023 19:22:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233102AbjKOTWW (ORCPT ); Wed, 15 Nov 2023 14:22:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233101AbjKOTWT (ORCPT ); Wed, 15 Nov 2023 14:22:19 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6C191B3 for ; Wed, 15 Nov 2023 11:22:10 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 351A3C433CB; Wed, 15 Nov 2023 19:22:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700076130; bh=oz/wJiHbBHiOmgN23B6frB4IwoSHpCXC5FEHgtjM9pM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lJRZ8Y4HyIukyAteMW5gQdCeckZG4CAmtjChECopJa7gYjl096Jj0i0cN63TZJE1S UNUVI5RNsc28spQP+BsX9semJVa2LwqO7c5dDMYkKW8skwA1MiVXHCA6wjFlE8HmpM Yc4DDqI2mbWXps9ASLJp9mqz7lkgwwTGYKqvmeWg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bo Jiao , Shayne Chen , Felix Fietkau , Sasha Levin Subject: [PATCH 6.5 093/550] wifi: mt76: fix potential memory leak of beacon commands Date: Wed, 15 Nov 2023 14:11:17 -0500 Message-ID: <20231115191607.169669986@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115191600.708733204@linuxfoundation.org> References: <20231115191600.708733204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bo Jiao [ Upstream commit d6a2f91741d9f43b31cb16c82da37f35117a6d1c ] Fix potential memory leak when setting beacon and inband discovery commands. Fixes: e57b7901469f ("mt76: add mac80211 driver for MT7915 PCIe-based chipsets") Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Bo Jiao Signed-off-by: Shayne Chen Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 10 ++++++++-- drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 10 ++++++++-- 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 4278eacf43845..411157e93865b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -1922,8 +1922,10 @@ mt7915_mcu_add_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vif, skb = ieee80211_get_unsol_bcast_probe_resp_tmpl(hw, vif); } - if (!skb) + if (!skb) { + dev_kfree_skb(rskb); return -EINVAL; + } info = IEEE80211_SKB_CB(skb); info->control.vif = vif; @@ -1935,6 +1937,7 @@ mt7915_mcu_add_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vif, if (skb->len > MT7915_MAX_BEACON_SIZE) { dev_err(dev->mt76.dev, "inband discovery size limit exceed\n"); + dev_kfree_skb(rskb); dev_kfree_skb(skb); return -EINVAL; } @@ -1991,11 +1994,14 @@ int mt7915_mcu_add_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif, goto out; skb = ieee80211_beacon_get_template(hw, vif, &offs, 0); - if (!skb) + if (!skb) { + dev_kfree_skb(rskb); return -EINVAL; + } if (skb->len > MT7915_MAX_BEACON_SIZE) { dev_err(dev->mt76.dev, "Bcn size limit exceed\n"); + dev_kfree_skb(rskb); dev_kfree_skb(skb); return -EINVAL; } diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index ac06450a79512..60cc3fdca9463 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -1942,11 +1942,14 @@ int mt7996_mcu_add_beacon(struct ieee80211_hw *hw, return PTR_ERR(rskb); skb = ieee80211_beacon_get_template(hw, vif, &offs, 0); - if (!skb) + if (!skb) { + dev_kfree_skb(rskb); return -EINVAL; + } if (skb->len > MT7996_MAX_BEACON_SIZE) { dev_err(dev->mt76.dev, "Bcn size limit exceed\n"); + dev_kfree_skb(rskb); dev_kfree_skb(skb); return -EINVAL; } @@ -2006,11 +2009,14 @@ int mt7996_mcu_beacon_inband_discov(struct mt7996_dev *dev, skb = ieee80211_get_unsol_bcast_probe_resp_tmpl(hw, vif); } - if (!skb) + if (!skb) { + dev_kfree_skb(rskb); return -EINVAL; + } if (skb->len > MT7996_MAX_BEACON_SIZE) { dev_err(dev->mt76.dev, "inband discovery size limit exceed\n"); + dev_kfree_skb(rskb); dev_kfree_skb(skb); return -EINVAL; } -- 2.42.0