Given the following code containing errors, provide Common Weakness Enumeration (CWE) identifiers and corresponding messages in JSON format. Each identified weakness should have a unique entry in the JSON array.
    Code: static int pwc_video_open(struct inode *inode, struct file *file)
{
	int i, ret;
	struct video_device *vdev = video_devdata(file);
	struct pwc_device *pdev;

	PWC_DEBUG_OPEN(">> video_open called(vdev = 0x%p).\n", vdev);

	pdev = (struct pwc_device *)vdev->priv;
	BUG_ON(!pdev);
	if (pdev->vopen) {
		PWC_DEBUG_OPEN("I'm busy, someone is using the device.\n");
		return -EBUSY;
	}

	mutex_lock(&pdev->modlock);
	if (!pdev->usb_init) {
		PWC_DEBUG_OPEN("Doing first time initialization.\n");
		pdev->usb_init = 1;

		/* Query sensor type */
		ret = pwc_get_cmos_sensor(pdev, &i);
		if (ret >= 0)
		{
			PWC_DEBUG_OPEN("This %s camera is equipped with a %s (%d).\n",
					pdev->vdev->name,
					pwc_sensor_type_to_string(i), i);
		}
	}

	/* Turn on camera */
	if (power_save) {
		i = pwc_camera_power(pdev, 1);
		if (i < 0)
			PWC_DEBUG_OPEN("Failed to restore power to the camera! (%d)\n", i);
	}
	/* Set LED on/off time */
	if (pwc_set_leds(pdev, led_on, led_off) < 0)
		PWC_DEBUG_OPEN("Failed to set LED on/off time.\n");

	pwc_construct(pdev); /* set min/max sizes correct */

	/* So far, so good. Allocate memory. */
	i = pwc_allocate_buffers(pdev);
	if (i < 0) {
		PWC_DEBUG_OPEN("Failed to allocate buffers memory.\n");
		pwc_free_buffers(pdev);
		mutex_unlock(&pdev->modlock);
		return i;
	}

	/* Reset buffers & parameters */
	pwc_reset_buffers(pdev);
	for (i = 0; i < pwc_mbufs; i++)
		pdev->image_used[i] = 0;
	pdev->vframe_count = 0;
	pdev->vframes_dumped = 0;
	pdev->vframes_error = 0;
	pdev->visoc_errors = 0;
	pdev->error_status = 0;
	pwc_construct(pdev); /* set min/max sizes correct */

	/* Set some defaults */
	pdev->vsnapshot = 0;

	/* Start iso pipe for video; first try the last used video size
	   (or the default one); if that fails try QCIF/10 or QSIF/10;
	   it that fails too, give up.
	 */
	i = pwc_set_video_mode(pdev, pwc_image_sizes[pdev->vsize].x, pwc_image_sizes[pdev->vsize].y, pdev->vframes, pdev->vcompression, 0);
	if (i)	{
		unsigned int default_resolution;
		PWC_DEBUG_OPEN("First attempt at set_video_mode failed.\n");
		if (pdev->type>= 730)
			default_resolution = PSZ_QSIF;
		else
			default_resolution = PSZ_QCIF;

		i = pwc_set_video_mode(pdev,
				       pwc_image_sizes[default_resolution].x,
				       pwc_image_sizes[default_resolution].y,
				       10,
				       pdev->vcompression,
				       0);
	}
	if (i) {
		PWC_DEBUG_OPEN("Second attempt at set_video_mode failed.\n");
		pwc_free_buffers(pdev);
		mutex_unlock(&pdev->modlock);
		return i;
	}

	i = pwc_isoc_init(pdev);
	if (i) {
		PWC_DEBUG_OPEN("Failed to init ISOC stuff = %d.\n", i);
		pwc_isoc_cleanup(pdev);
		pwc_free_buffers(pdev);
		mutex_unlock(&pdev->modlock);
		return i;
	}

	/* Initialize the webcam to sane value */
	pwc_set_brightness(pdev, 0x7fff);
	pwc_set_agc(pdev, 1, 0);

	pdev->vopen++;
	file->private_data = vdev;
	mutex_unlock(&pdev->modlock);
	PWC_DEBUG_OPEN("<< video_open() returns 0.\n");
	return 0;
} ; Sample JSON Format Confermily Expected output: "examples" => "cwe": "xxx"; "message": "xxx"
    
 'cwe': ['CWE-399'], 'message': 'USB: fix DoS in pwc USB video driver

the pwc driver has a disconnect method that waits for user space to
close the device. This opens up an opportunity for a DoS attack,
blocking the USB subsystem and making khubd's task busy wait in
kernel space. This patch shifts freeing resources to close if an opened
device is disconnected.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
CC: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>'