From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793831846; b=4qKEUthAxFQ2USbiL5rCIPqhAN6zYxY9jT47r4qIaAXFsE293S60hVJoL8a1d1O1dNNP 2scEu/pjZk1wNwWEds2vbaLWvn5n7aW+fSGxnD5aFOa29ndvf0nZ1tW6aQtzFYbHVgLiC rS/EcutiZgc3oS8QEn1cgrjclNlttz8dg95B+8Ub9RKhssUy8z5ui4IWwaWw78jdEq889 FWisNAb5OVN9VdZqWgS3rFqyYT5BuRPcpKR7lDNntJMFfzPdcc+UJxjjfbfYwIoLMAM9B So4QhBG9OrfU/rqWYBXffUWe9O9T09FB9V1n+PWY+3snK3/TetPhbAhD/IOk1h+YCcw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793831846; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=hPXiwiLejnJGYVuplLhGHY33saAr9MpqspSq0jxqg2E=; b=K0Crme+vaGQ/SdfqK4G2VpcLpNkJr0KQArcj4JICx30wB1E61qyh+ETW1N734I9Bjx8x jh7Du8b9tW/0LGSCH0cycDUYX2asw6VWtRYoUsJ32x/OTtOpA8sHMT0oJvVpldNovJE2u KkOJRGFA3OeFfXaugFoOCw2I41yHtFanYPTp69Hz5ooDvwuUkS/a7iaL7PeBpa10BZQ5m 6AsDNYhyXCRpMdb/w7pZuWuvRrsrULe7Uq5986C0WO3fXThjSoEWhcY8hbfirssUmJafw LQE/HGeTxxiESN3dQmsynZyb2XOPCYubrb09ukb9ewn6/LtecECgMZ9zCuNG5YaZ0Ow== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=cBwwjgM7; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D170606A329; Wed, 4 Nov 2026 22:37:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=cBwwjgM7 Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0EE61F000C1; Wed, 4 Nov 2026 22:37:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793831846; bh=hPXiwiLejnJGYVuplLhGHY33saAr9MpqspSq0jxqg2E=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cBwwjgM720TqZN22uVyyjhWFRkFnkdtHd7U9099DHioUJQ2pISuiRWvrNFqspOBPm bdi7gZ9xsBRTzlDKzcROe/dJdrPycj8cQO/KWOph2IHw4wY+Wb5w91qe0aHt6IrhXr ponPsSEfBa7Jx2dZrA6OwrqSBbHPQbhYW31QppBY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiale Yao , Jiri Kosina Subject: [PATCH 6.18 0951/1005] HID: elo: reject short touchscreen reports Date: Wed, 4 Nov 2026 16:11:24 -0500 Message-ID: <20261104211109.742651432@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211043.516122098@linuxfoundation.org> References: <20261104211043.516122098@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiale Yao commit 1cb92fcb2ac344d78737e3c5cb7b061dfb2850b1 upstream. The HID core invokes raw_event callbacks before validating the report length. elo_raw_event() only checks the first-byte packet marker before elo_process_data() reads coordinates, flags, and pressure through offset seven. A truncated packet beginning with the expected marker can therefore cause an out-of-bounds read. Require the complete eight-byte SmartSet packet before parsing it. Commit 47669bec44fe ("HID: asus: refactor the two workqueues and init sequence") added the same kind of raw_event length validation to hid-asus. Fixes: d23efc19478a ("HID: add driver for ELO 4000/4500") Cc: stable@vger.kernel.org Signed-off-by: Jiale Yao Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- drivers/hid/hid-elo.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/hid/hid-elo.c +++ b/drivers/hid/hid-elo.c @@ -85,6 +85,9 @@ static int elo_raw_event(struct hid_devi if (!(hdev->claimed & HID_CLAIMED_INPUT) || list_empty(&hdev->inputs)) return 0; + if (size < ELO_SMARTSET_PACKET_SIZE) + return 0; + hidinput = list_first_entry(&hdev->inputs, struct hid_input, list); switch (report->id) {