CVE-2022-48836
Description
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
How to fix
- linux linux_kernel4.9.308, 4.14.273, 4.19.236, 5.4.187, 5.10.108, 5.15.31, 5.16.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.4 ≤ v < 4.9.308, 4.10 ≤ v < 4.14.273, 4.15 ≤ v < 4.19.236, 4.20 ≤ v < 5.4.187, 5.5 ≤ v < 5.10.108, 5.11 ≤ v < 5.15.31, 5.16 ≤ v < 5.16.17 | 4.9.308, 4.14.273, 4.19.236, 5.4.187, 5.10.108, 5.15.31, 5.16.17 |
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