From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 559D1606A319 for ; Tue, 20 Oct 2026 02:46:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=gVl9tg69; 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; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=RN3k8czzMRgmOq/HRFi3+tQnogP9QGjQCyHmUCQ+VUg=; b=gVl9tg69IMrN/RGhp4U04JYkAC zDrRyCQlqtp/hlonSZpE78KrVrLSRopn0BlLs8Qzd/lQP/RYh6mdBikNt+YWnQoHitNGIcpI3RdWR 4thhjELJRMEve//NTN/29JD1ET2Cbo/mRDXMtA6Pg5oq/z/szOutXLRWcwd49We2CBPafGFZUG5hW LkTBA9uDvH/hhSi+s+IyARBGkMNa65V6MIFogIrjL7JSKze3YdHbg7FvVkCYUZK1TvAtN/xdzjCBZ BJ8rwx4F4nrjsyK9MUNRzIlGEl0qxfahLiq2F+/rCrC7Kv/ZE7tciZ5L6RuKCEDaCrsdPnRF8tyJL S5opCLFg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIzs9-00000008i7O-2s2W; Tue, 20 Oct 2026 02:46:41 +0000 Received: from m16.mail.163.com ([117.135.210.2]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIzrc-00000008hgB-105l; Tue, 20 Oct 2026 02:46:09 +0000 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-Archived-By: 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261019_194608_645561_D57A5EFF X-CRM114-Status: UNSURE ( 9.11 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.8 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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