From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=220.197.31.2 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792464398; b=2M8ajll0cu8jOjQREGUw0H2BGRdjLDOcFy77pjMag2FX5KH/sYwsKofaKM7JoqiY5z6g WWvaH4dFwXStwig8j9ySuPjOdCvS9Zh2AanO1mvTQnRJkLlcdDWnjwTunozPnFQLyoBEL IxBdaVoh62gcBdY9cVADah83tZmhmp7jtg4Kdu6Y2GN9MZ4DkuWUl0++0nT77RZQbBfJO mLBuZ/bwwU8raxqFM5xrAZM80+SJr8dVhSmVbgGqHs6zJlB6A7IXuW5aFVeOZQKEXCA0c 8C7/ApRLMynt4CPWcs4lT/DmrtLSqd6KKbFdLS50JkWGtmg9jO4avBMeNSAy2Cjrxbg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792464398; h=DMARC-Filter:DKIM-Signature:Received:From:To:Subject:Date:Message-Id: X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding:X-CM-TRANSID:X-Coremail-Antispam: X-CM-SenderInfo; bh=RN3k8czzMRgmOq/HRFi3+tQnogP9QGjQCyHmUCQ+VUg=; b=DJH+HZWxU/h+YQJZJVuBniqBAIR6QGAbMI3nhss5vGUUL4kciD6cuRZ1/FMKpHUz8hhT VEe7/AXF+v6c9aMshXGxjI113eUdmGNXz3yH+G6lcwlQLPxbL6a5YU1Lf2XEzHVhdzYCM 5VuEA40CJpwrbPGFXn3Ws8uFOomKygQcEgcZLcTNENpeOYqWlRkYQQRPcuNmlxipC1/mi N7S/m+ZIeuTUHdBkDnUuqmfnw69FZRIJs1ji57e84KB1BeBBkLAjIt0POsIj6E9RIsaJV 2L0NjGfLkg0ixnpsd0Wd+UgYFJeHdBz2SDBbog1vsAG/6lkS+F9rGU58WoCvfYBISiA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=mxGw2sQB; arc=none smtp.remote-ip=220.197.31.2 Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 26AEC606A322; Tue, 20 Oct 2026 02:46:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 26AEC606A322 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=mxGw2sQB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=RN 3k8czzMRgmOq/HRFi3+tQnogP9QGjQCyHmUCQ+VUg=; b=mxGw2sQB8hYJH4gYCq 2y4+hkmlB0hxn0pMepd5zM3sa7gANUfKHPDFUk4XIvbM0B51vDMd6CIxr/lVIOEW ehDF12aKnU4q8pZf/Qr6WpplhraUTr7OnxhBx03JOvMHTtN61a0teSjPmIWpkE4/ +Kr/JD49adTnwyQe4Y5MUaTr8= Received: from pc.localdomain (unknown []) by gzga-smtp-mtada-g0-1 (Coremail) with SMTP id _____wD3H9HZ1dZq2OtmBQ--.60682S11; Tue, 20 Oct 2026 10:45:59 +0800 (CST) From: Jiale Yao To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Deren Wu , Hao Zhang , Mingyen Hsieh , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH 09/11] wifi: mt76: mt7925: validate TX power response length Date: Tue, 20 Oct 2026 10:45:41 +0800 Message-Id: <20261020024544.3101738-10-yaojiale02@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261020024544.3101738-1-yaojiale02@163.com> References: <20261020024544.3101738-1-yaojiale02@163.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:_____wD3H9HZ1dZq2OtmBQ--.60682S11 X-Coremail-Antispam: 1Uf129KBjvdXoW7GF45uryktFy3XryDtFy3CFg_yoWkWFcE9r 4v9r97Jr18G3yDtr42kF43WFZFy3y8X3WkArWrtrWrWa17J3y7Cr9ayrsxWr9ruws7ZF45 Gwn8Aa4UX34SgjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUbAsqtUUUUU== X-CM-SenderInfo: x1dryxhdohiji6rwjhhfrp/xtbC8Af+OWrW1eccuwAA3Z The TX power query copies a complete event payload without checking the firmware response length. A truncated response can cause an out-of-bounds read. Require the complete TX power event before copying its payload. Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips") Signed-off-by: Jiale Yao --- drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c index d768002c64c2..f37d2a8eafe6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c @@ -2287,6 +2287,10 @@ int mt7925_get_txpwr_info(struct mt792x_dev *dev, u8 band_idx, struct mt7925_txp &req, sizeof(req), true, &skb); if (ret) return ret; + if (skb->len < sizeof(*event)) { + dev_kfree_skb(skb); + return -EINVAL; + } event = (struct mt7925_txpwr_event *)skb->data; memcpy(txpwr, &event->txpwr, sizeof(event->txpwr)); -- 2.34.1