From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C0870332916; Mon, 20 Apr 2026 15:54:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776700445; cv=none; b=Go/gHL17hwXPYy15vSvnNbW7qTHo2aQaB+aQutod5Zll9uvRJ5J5yj6mLL/TA2K2O9aTeJuZHfTI90usvnR4hl9zJJlu4B2vy1y+RsymQe1yR/x+0FxqbXKDoJ3wOyt7ncV5rvqtdLtRvZQ6NrXY2fFm40vcxcWO8vpvznb8bEc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776700445; c=relaxed/simple; bh=8Q3ROlLIzG1nOwWOetyvdp3O3sokICRXizuBa8SdYig=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pjjXpVGWilkjMfK/yMQ3rg2DRP3GWHOlCMmp7RwgsqHbaZE4p4THu3Xez9XxhlcOFuiX3IEJx+k9K1EiJF80qukDRHRV+GS1L5hslv4TwOKLhYj65ZeBktbmQHmmQSKlJMJfLTEoYFhG9EsvS9ULW6qCkr7QUoHqX1q7GHTis+k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=R1WE0sNE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="R1WE0sNE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56484C19425; Mon, 20 Apr 2026 15:54:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776700445; bh=8Q3ROlLIzG1nOwWOetyvdp3O3sokICRXizuBa8SdYig=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R1WE0sNEt3BkJQBPHn6PglGjq5YsgNV+P2Ci5oL3XJk5YnS6ubv5iwAzjHt3BQl8r p4ELNB/5k1k5LKDLJmXwLqT7nkWX4zeJQC7BWXGMKMFsW1vqleuhNG4hD2TMWiNwe9 PJaCc/83vMZeKMnerWSU6Ay9D+zTV2GZTGJ9AJfU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Jiri Kosina , Benjamin Tissoires , Masaki Ota , linux-input@vger.kernel.org, Jiri Kosina Subject: [PATCH 6.19 144/220] HID: alps: fix NULL pointer dereference in alps_raw_event() Date: Mon, 20 Apr 2026 17:41:25 +0200 Message-ID: <20260420153939.212279871@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260420153934.013228280@linuxfoundation.org> References: <20260420153934.013228280@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 6.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Greg Kroah-Hartman commit 1badfc4319224820d5d890f8eab6aa52e4e83339 upstream. Commit ecfa6f34492c ("HID: Add HID_CLAIMED_INPUT guards in raw_event callbacks missing them") attempted to fix up the HID drivers that had missed the previous fix that was done in 2ff5baa9b527 ("HID: appleir: Fix potential NULL dereference at raw event handle"), but the alps driver was missed. Fix this up by properly checking in the hid-alps driver that it had been claimed correctly before attempting to process the raw event. Fixes: 73196ebe134d ("HID: alps: add support for Alps T4 Touchpad device") Cc: stable Cc: Jiri Kosina Cc: Benjamin Tissoires Cc: Masaki Ota Cc: linux-input@vger.kernel.org Assisted-by: gregkh_clanker_t1000 Signed-off-by: Greg Kroah-Hartman Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- drivers/hid/hid-alps.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/hid/hid-alps.c +++ b/drivers/hid/hid-alps.c @@ -437,6 +437,9 @@ static int alps_raw_event(struct hid_dev int ret = 0; struct alps_dev *hdata = hid_get_drvdata(hdev); + if (!(hdev->claimed & HID_CLAIMED_INPUT) || !hdata->input) + return 0; + switch (hdev->product) { case HID_PRODUCT_ID_T4_BTNLESS: ret = t4_raw_event(hdata, data, size);