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 CB4C93242AC; Thu, 12 Mar 2026 20:25:16 +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=1773347116; cv=none; b=YZ3TeOqDNucTGPSzGZrb17zf6hbESQimn6Q1QrNJyZp6rfm90d7t4mz8+7XSRTbdBx8DyjmwWLgJ6JP7xNMyJ5YHRbC2gTwgmbjo6jDCwnTKbEnqVw9Dka8OtZo2T+fL0iZXu12oKggz/lmfKckHCKcJ/p2FXKlKkpzDB8NFC2M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773347116; c=relaxed/simple; bh=5zkaRzVzSyVTQBgvIRVfIW1vWPrcVHWO42pl+ZUFEJ8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bGxxMp5ggC8lQsSrU2aiD7U48s4Qlslfarb3ISXLY5paR3LjByT5M6oEaiSV79qp9Xm9yInxkQSbo4JRN/9LVZlIpEtoPyzspMfj5+ygpz2UVX5s/MP3SIAnXlUeGQd/NS52+y/eTiV5wQFcaNIqD8ofbcEKZubyqCA8csT803s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AzYyVBeP; 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="AzYyVBeP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BEFF0C4CEF7; Thu, 12 Mar 2026 20:25:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1773347116; bh=5zkaRzVzSyVTQBgvIRVfIW1vWPrcVHWO42pl+ZUFEJ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AzYyVBePePl6dmm4X7+z4sayTW7aOaCvAjJ4NJ7ViWo3FpY19IpsjiQ3yQ0/UN3ax bQC4f9hXSI22CoOMz8kJiR1e/dH9G9bMDiE3r7YJy9Ftp1+j0Gv1jsCPyUIkWTm3TI W9Vih9YbtcDp5X7JTBOAkXhhlN9yi68poeJtMjkQ= 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 6.12 207/265] wifi: mt76: mt7996: Fix possible oob access in mt7996_mac_write_txwi_80211() Date: Thu, 12 Mar 2026 21:09:54 +0100 Message-ID: <20260312201025.798762702@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260312201018.128816016@linuxfoundation.org> References: <20260312201018.128816016@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 6.12-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 0990a3d481f2d..b7a5426c933d0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -759,6 +759,7 @@ 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