From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 ECD954E8E0F; Fri, 9 Oct 2026 14:44:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791557070; cv=none; b=XWyMhibqvMTt2HBQ0kYTrtLbIkkHWatjOg+iuLZdUV5FIR3HMndNjPSlkRfxzaOZLM6+5e+P0IFQWWNs7TkPNaondXlLR93W+rxcLUzaqbOf6wc1yj1svVzQLGeKZy0hRA9jI0AH4MU/Hx0c2wAVGgOY3qseXFjFPTDh/GLuNoo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791557070; c=relaxed/simple; bh=vwrvntRsYU5+B7pjFOHeJRsl69ttXgwe+1XvVjrznGg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cW+E9BBt7JVqhLJXF2c+Y9KJ1AamnVXefV2QrLVpxkanU/ktIEx44fBcjsg5EtaZWYf8yeITmBoEHmBUvFww6HDxbHcj00vHZWvyhgsvXGvP72qEpkzWULAjUnXzWy0qnzqJznUfeeYNG9rbjoIOE0UKstuHyoI8MERL+ePE1v8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TV00o8Hc; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="TV00o8Hc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 586FA1F0089C; Fri, 9 Oct 2026 14:44:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1791557069; bh=7odJJrHmnsuSiOaXZzjZIm9p3X6/LEhW7ZNSOZ8ySFA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=TV00o8HcTo0iEAhJC7kbY78oAr/knT0zIYkY9HC2smiM9Zhi47TZPwjemAoScXpl6 yHhe0z2f5AgZxJM9FaZPsYqAV9vGAtNH25wG8dpIjZoJJp1CeCvvmyFEeJ5l6O+88v xXxIgUs/WcUBu1SX0blbHYcF57G56SHyWB8TkSrU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chandrashekar Devegowda , Luiz Augusto von Dentz Subject: [PATCH 7.2 291/428] Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame() Date: Fri, 9 Oct 2026 16:10:28 +0200 Message-ID: <20261009140952.498676652@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261009140946.008206689@linuxfoundation.org> References: <20261009140946.008206689@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chandrashekar Devegowda commit 7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea upstream. plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen is a 16-bit field, so a value >= 0xFFFC wraps the sum, bypassing the "skb->len < plen" check and letting skb_trim() truncate the packet. Widen plen to u32 so the addition cannot wrap. Fixes: c2b636b3f788 ("Bluetooth: btintel_pcie: Add support for PCIe transport") Cc: stable@vger.kernel.org Signed-off-by: Chandrashekar Devegowda Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btintel_pcie.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/bluetooth/btintel_pcie.c +++ b/drivers/bluetooth/btintel_pcie.c @@ -1197,7 +1197,7 @@ static int btintel_pcie_recv_frame(struc { int ret; u8 pkt_type; - u16 plen; + u32 plen; u32 pcie_pkt_type; void *pdata; struct hci_dev *hdev = data->hdev;