CVE-2022-49151 can: mcba_usb: properly check endpoint type
A missing endpoint type check in the mcba_usb driver causes a kernel warning and potential crash when a malicious USB device is connected.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49151?
CVE-2022-49151 is a medium-severity vulnerability in Linux kernel, published on 26 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
can: mcba_usb: properly check endpoint type
Syzbot reported warning in usb_submit_urb() which is caused by wrong endpoint type. We should check that in endpoint is actually present to prevent this warning.
Found pipes are now saved to struct mcba_priv and code uses them directly instead of making pipes in place.
Fail log:
| usb 5-1: BOGUS urb xfer, pipe 3 != type 1 | WARNING: CPU: 1 PID: 49 at drivers/usb/core/urb.c:502 usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502 | Modules linked in: | CPU: 1 PID: 49 Comm: kworker/1:2 Not tainted 5.17.0-rc6-syzkaller-00184-g38f80f42147f #0 | Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 | Workqueue: usb_hub_wq hub_event | RIP: 0010:usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502 | ... | Call Trace: | <TASK> | mcba_usb_start drivers/net/can/usb/mcba_usb.c:662 [inline] | mcba_usb_probe+0x8a3/0xc50 drivers/net/can/usb/mcba_usb.c:858 | usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 | call_driver_probe drivers/base/dd.c:517 [inline]
Which versions are affected by CVE-2022-49151?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49151?
Apply the vendor's patch.
Is CVE-2022-49151 being exploited?
There is no known exploitation of CVE-2022-49151 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49151, GHSA-3vxm-x76j-8hmh, UBUNTU-CVE-2022-49151.