In the Linux kernel, the following vulnerability has been resolved:

staging: gpib: Fix Oops after disconnect in ni_usb

If the usb dongle is disconnected subsequent calls to the
driver cause a NULL dereference Oops as the bus_interface
is set to NULL on disconnect.

This problem was introduced by setting usb_dev from the bus_interface
for dev_xxx messages.

Previously bus_interface was checked for NULL only in the the functions
directly calling usb_fill_bulk_urb or usb_control_msg.

Check for valid bus_interface on all interface entry points
and return -ENODEV if it is NULL.

https://git.kernel.org/stable/c/5dc98ba6f7304c188b267ef481281849638447bf

https://git.kernel.org/stable/c/a239c6e91b665f1837cf57b97fe638ef1baf2e78

https://git.kernel.org/stable/c/b2d8d7959077c5d4b11d0dc6bd2167791fd1c72e