6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
commit c6ef3a7fa97ec823a1e1af9085cf13db9f7b3bac upstream.
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: a31a4055473b ("V4L/DVB:usbvideo:don't use part of buffer for USB transfer #4")
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20241107235130.31372-1-laurent.pinchart@xxxxxxxxxxxxxxxx
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/usb/uvc/uvc_status.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/usb/uvc/uvc_status.c
+++ b/drivers/media/usb/uvc/uvc_status.c
@@ -269,6 +269,7 @@ int uvc_status_init(struct uvc_device *d
dev->int_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->int_urb) {
kfree(dev->status);
+ dev->status = NULL;
return -ENOMEM;
}
