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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3D84BCCF2E8 for ; Mon, 19 Oct 2026 10:15:50 +0000 (UTC) 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:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=JMdvjLbmygaAxKZ4470P9jf9J5rCOTHbqfSHY5SXp9A=; b=4tZvOru8rOfVj1Pw+UPW2A/igi WokvfkEDYlGlybIJu2e0VDCSo1KZ8n8Xslnjf9QtxYxUH8+IJ5ldxejYZfPVW+nKy722zcykf7VoF W9zV+8prMvmvbzXHIQTjX7H8jPY0R8k/3V61VyD7q/JyObZ6o1C+HENFSNBlQJiITfjTnydMhARzG hbhTm9Hxmz1qKTYrBLogTHyPYEatBeVTGXI0NBX+E/APrMC4291af3zVxXYz4kwcDGB7B7FtEqu3w PKL/D6FRiVgTfrfnnVz1/VL3MSXbnt3AtO6yTpPzuJ4TGk5e2CFsWi5m27yINXfjCiR/odWhG+qg1 jeWsSxNA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIkP8-000000078vr-40no; Mon, 19 Oct 2026 10:15:43 +0000 Received: from m16.mail.163.com ([220.197.31.4]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIkP2-000000078n7-3V70; Mon, 19 Oct 2026 10:15:38 +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=JM dvjLbmygaAxKZ4470P9jf9J5rCOTHbqfSHY5SXp9A=; b=BIY9THpN9z3EpLKmw6 4URT/x8Kal0nnp8LhuXSCxTBtnN/5V3sL4UiJBDx+a5+ZCA83gqPH5NJOWLa5Suy 8FqvlrgAH4H2QHR3+1e6wxEnHqpXWncVSXbY4XoMyFpKcOuVlg1BCHws04oUVd/c RCQUxVyiHd6O+gtpnrrn5Q5Sc= Received: from pc.localdomain (unknown []) by gzga-smtp-mtada-g0-0 (Coremail) with SMTP id _____wD3Hxax7dVq4twABQ--.41578S9; Mon, 19 Oct 2026 18:15:27 +0800 (CST) From: Jiale Yao To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Jiale Yao Subject: [PATCH 07/10] wifi: mt76: mt7915: validate channel MIB response length Date: Mon, 19 Oct 2026 18:15:02 +0800 Message-Id: <20261019101506.1926943-8-yaojiale02@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261019101506.1926943-1-yaojiale02@163.com> References: <20261019101506.1926943-1-yaojiale02@163.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: _____wD3Hxax7dVq4twABQ--.41578S9 X-Coremail-Antispam: 1Uf129KBjvdXoWrtFW8tr4UXFy8ur47Gr18uFg_yoWkArX_ur nY9rnxKr18Gw1qkr12k3y293yqy395X3WkZrZ3trW3XwsrAFWfCr9rZwnrGrZF9rn2vF45 Gr98CayUAa4agjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRiuWl7UUUUU== X-CM-SenderInfo: x1dryxhdohiji6rwjhhfrp/xtbCzR+69GrV7b+MHgAA3j X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261019_031537_252923_51FE0624 X-CRM114-Status: UNSURE ( 8.36 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The channel survey query reads several MIB entries at a chip-specific offset without checking that the firmware response reaches those entries. A truncated response can cause out-of-bounds reads. Validate the offset and complete MIB array before processing it. Fixes: 654300281196 ("mt76: mt7915: use mt7915_mcu_get_mib_info() to get survey data") Signed-off-by: Jiale Yao --- drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 05614b99165b..955c0e6c7cb6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -3239,6 +3239,10 @@ int mt7915_mcu_get_chan_mib_info(struct mt7915_phy *phy, bool chan_switch) req, len * sizeof(req[0]), true, &skb); if (ret) return ret; + if (skb->len < offs_cc + len * sizeof(*res)) { + dev_kfree_skb(skb); + return -EINVAL; + } res = (struct mt7915_mcu_mib *)(skb->data + offs_cc); -- 2.34.1