media: uvcvideo: Fix double free in error path

jira LE-3622
cve CVE-2024-57980
Rebuild_History Non-Buildable kernel-6.12.0-55.22.1.el10_0
commit-author Laurent Pinchart <laurent.pinchart@ideasonboard.com>
commit c6ef3a7

If the uvc_status_init() function fails to allocate the int_urb, it will
free the dev->status pointer but doesn't reset the pointer to NULL. This
results in the kfree() call in uvc_status_cleanup() trying to
double-free the memory. Fix it by resetting the dev->status pointer to
NULL after freeing it.

Fixes: a31a405 ("V4L/DVB:usbvideo:don't use part of buffer for USB transfer #4")
	Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20241107235130.31372-1-laurent.pinchart@ideasonboard.com
	Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed by: Ricardo Ribalda <ribalda@chromium.org>
	Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
(cherry picked from commit c6ef3a7)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: PlaidCat

drivers/media/usb/uvc/uvc_status.c

@@ -269,6 +269,7 @@ int uvc_status_init(struct uvc_device *dev)
 	dev->int_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!dev->int_urb) {
 		kfree(dev->status);
+		dev->status = NULL;
 		return -ENOMEM;
 	}