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 9790D34389F; Sat, 30 May 2026 17:39:24 +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=1780162766; cv=none; b=tZKtTVN6vCYr2qdoig+OFLNhrhHf4uK1O+Y6I2r0ve6YaIIDqwsZnArIWia1nOWzukqfsOjVrcWBuP/PnMTCPxhbhHevXmg8ZMNA4TcmlbknaNEkQRQTHISVrf+0ETKwIRyHvlhY7ZlW+cMcM+G0cxRkAY9eIpagMnDGSVAq7gU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780162766; c=relaxed/simple; bh=vAoyYDztNTtSSED5jIKqo+y6hLpfX3nde+5Pak/6OV4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dCTsLUjzdGPQRz7eII+IHs2JsH4ZgzarKg7hDR/ul0bE+JsRXjFCA2dYG85kcY7fTLJpABtjbktF9s8kIWpnlrNqgCBEHhqqeVfD1u9ydd85AZbtbCOyOVNpyHxsQK7wdr9TMziTDvFayiNwKD5JfRAgA39pbLaPHBavyJTEWRY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=diT7wAZR; 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="diT7wAZR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DAD401F00893; Sat, 30 May 2026 17:39:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780162764; bh=PjtiooSNFHoHgQrU2Y0NjFM63Fl1RGLI3tDDi6SQCDo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=diT7wAZR2fBlb+euTkjHCLrmYRCXmLRBE+JoSD/hK+2l9T+1T8qXflgjWaufYXq5S aYebqlMJbCRfeu+d92f/KHZxfq6pgvdu6qu3V6GDZtFzUtPTPRnsr0dxeKtIDBBEM2 PUgjZyvKwSzPKap3XMoQJ5R3w8UAKyDTlmb6cdYI= 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 5.15 056/776] HID: alps: fix NULL pointer dereference in alps_raw_event() Date: Sat, 30 May 2026 17:56:10 +0200 Message-ID: <20260530160241.762132673@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160240.228940103@linuxfoundation.org> References: <20260530160240.228940103@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-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);