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

HID: alps: unregister DualPoint Stick input device on remove

alps input configured() allocates a second input device ("DualPoint Stick") with input allocate device() and registers it, but the alps driver struct has no .remove handler and input2 is not tracked in hdev->inputs. The default remove path (hid hw stop -> hidinput disconnect) only iterates hdev->inputs, so input2 is never unregistered and leaks on every device removal.

Add a .remove handler that stops the device first (preventing URB callbacks from touching input2 during teardown) and then unregisters input2.