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 978062E542F; Tue, 8 Jul 2025 16:59:24 +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=1751993964; cv=none; b=dOJ9XxB47v2U4pzJksE8fvSPvYA3sOpVh4trx9fgVOVIcv3ErBQZDI83aRXxRzh7ta26CDsewKlHloXYO5ehBlEa7TP6c5aYO/nxQQ4FZejtc0VeVMmE2KBRk9Ok+5A7sWcwUzgokpMMgv7qtBMc39J08TGZfdpkPWocO5zRfVQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751993964; c=relaxed/simple; bh=MBRfG6kKDCLYc3DVaafTKwa9aRTpgOkcHkRVQlfBMRQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ECeaNOKtsKsRSXc20dZX98hpGJb0cQnqe1rsTh+yciL0tgAVyARDKgbCc8XnnUcD75WBEPNRT4+e9R2jtkwwoKVklwrNX1WUIyL2+p8wHU7CcO2P0ecpF4zMmI8W06qpknst7Yn4FJnejuRVMQ7xIcGWorzfW8RKihmnwQ0rEX0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=1iy9V4of; 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="1iy9V4of" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CFC73C4CEF0; Tue, 8 Jul 2025 16:59:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751993964; bh=MBRfG6kKDCLYc3DVaafTKwa9aRTpgOkcHkRVQlfBMRQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1iy9V4ofHRYe/hbfjQKO3slQFZcGt+elt8vgqcx8xBoBkqVUm+hKve9Y3ry54+P6X WlpiuDfkWcUHsBvlj6bk9KDtcp5PirtukYv8M6E5ZRpJjqAP6bPRflqYCqIKFH/CYm u4XA/QSBiXpAP2SdtWrsq/LTQ7TQ2FfxhTiRIm/4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ping Cheng , Qasim Ijaz , Jiri Kosina Subject: [PATCH 5.15 079/160] HID: wacom: fix kobject reference count leak Date: Tue, 8 Jul 2025 18:21:56 +0200 Message-ID: <20250708162233.729243340@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162231.503362020@linuxfoundation.org> References: <20250708162231.503362020@linuxfoundation.org> User-Agent: quilt/0.68 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Qasim Ijaz commit 85a720f4337f0ddf1603c8b75a8f1ffbbe022ef9 upstream. When sysfs_create_files() fails in wacom_initialize_remotes() the error is returned and the cleanup action will not have been registered yet. As a result the kobject???s refcount is never dropped, so the kobject can never be freed leading to a reference leak. Fix this by calling kobject_put() before returning. Fixes: 83e6b40e2de6 ("HID: wacom: EKR: have the wacom resources dynamically allocated") Acked-by: Ping Cheng Cc: stable@vger.kernel.org Signed-off-by: Qasim Ijaz Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- drivers/hid/wacom_sys.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -2031,6 +2031,7 @@ static int wacom_initialize_remotes(stru hid_err(wacom->hdev, "cannot create sysfs group err: %d\n", error); kfifo_free(&remote->remote_fifo); + kobject_put(remote->remote_dir); return error; }