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 E5ADE3AA518; Mon, 23 Mar 2026 14:59:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277946; cv=none; b=UiTQW7FERG5KvzWQIPPMwdL7LQcxlpyk6n5qHmdDEJBMKcbiG86U2YitFkg46mpcIgi60gemRZlWyha/yTpELayOAPaR4lBRNEg2vzWC6+yNkUShA4dCUc3EnZHU2/jX0rC6gBehSwU9nFmczS8nr1xI5ixJSknEP/it8eAKqu0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277946; c=relaxed/simple; bh=2y0tK+EJ8QAc82RhX0hcE+Qoc7e3tUbB/tPEtHtnMzE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E30Mb+v/X7BWDdkKCASZ1CcGXo1VYpRkNJgsacmP5HGLupbtva2/yQnxoidyCLT4rDGz7rLSnYYgFNmqak39Xt5Ay488eanTyXbudyTGcQ/0DZED32nQF4z1ZIYD+xLHnl3xwPOU5COp7b8NOg3CeQdvqTaFc3Nd1a+x0OLP4Uo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=b7fXRB/I; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="b7fXRB/I" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 627A5C4CEF7; Mon, 23 Mar 2026 14:59:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774277945; bh=2y0tK+EJ8QAc82RhX0hcE+Qoc7e3tUbB/tPEtHtnMzE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=b7fXRB/IFevfJX8iNCUyF6t+1u8JvyzAthzcU3MMt0D5NUXq+bmgdacJuNe+BAdQN xdHcXHd3dJ2XjUqqNTyGKRmdOo/Pwefimb5OsqBcAue1YZsboVRBNYlqPXJwyGwjPm Zt0ThL8bT+bPSznGi18VM7R7AROIT7UOJTxuHOck= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lorenzo Bianconi , Johannes Berg , Sasha Levin Subject: [PATCH 6.6 153/567] wifi: mt76: mt7996: Fix possible oob access in mt7996_mac_write_txwi_80211() Date: Mon, 23 Mar 2026 14:41:13 +0100 Message-ID: <20260323134537.617615797@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134533.749096647@linuxfoundation.org> References: <20260323134533.749096647@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lorenzo Bianconi [ Upstream commit 60862846308627e9e15546bb647a00de44deb27b ] Check frame length before accessing the mgmt fields in mt7996_mac_write_txwi_80211 in order to avoid a possible oob access. Fixes: 98686cd21624c ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260226-mt76-addba-req-oob-access-v1-1-b0f6d1ad4850@kernel.org Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index 8fa16f95e6a7b..3dd503b363ce0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -784,6 +784,7 @@ mt7996_mac_write_txwi_80211(struct mt7996_dev *dev, __le32 *txwi, u32 val; if (ieee80211_is_action(fc) && + skb->len >= IEEE80211_MIN_ACTION_SIZE + 1 && mgmt->u.action.category == WLAN_CATEGORY_BACK && mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) tid = MT_TX_ADDBA; -- 2.51.0