Input: aiptek - properly check endpoint type

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

Input: aiptek - properly check endpoint type

Syzbot reported warning in usb_submit_urb() which is caused by wrong

endpoint type. There was a check for the number of endpoints, but not

for the type of endpoint.

Fix it by replacing old desc.bNumEndpoints check with

usb_find_common_endpoints() helper for finding endpoints

Fail log:

usb 5-1: BOGUS urb xfer, pipe 1 != type 3

WARNING: CPU: 2 PID: 48 at drivers/usb/core/urb.c:502 usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502

Modules linked in:

CPU: 2 PID: 48 Comm: kworker/2:2 Not tainted 5.17.0-rc6-syzkaller-00226-g07ebd38a0da2 #0

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014

Workqueue: usb_hub_wq hub_event

...

Call Trace:

<TASK>

aiptek_open+0xd5/0x130 drivers/input/tablet/aiptek.c:830

input_open_device+0x1bb/0x320 drivers/input/input.c:629

kbd_connect+0xfe/0x160 drivers/tty/vt/keyboard.c:1593