CVE-2023-52938 usb: typec: ucsi: Don't attempt to resume the ports before they exist
A null pointer dereference in the Linux kernel USB Type-C UCSI driver allows local attackers to cause a system crash by triggering port resume operations before registration.
- 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-2023-52938?
CVE-2023-52938 is a medium-severity vulnerability in Linux kernel, published on 27 Mar 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:
usb: typec: ucsi: Don't attempt to resume the ports before they exist
This will fix null pointer dereference that was caused by the driver attempting to resume ports that were not yet registered.
Weakness: CWE-476
Which versions are affected by CVE-2023-52938?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52938?
Apply the vendor's patch.
Is CVE-2023-52938 being exploited?
There is no known exploitation of CVE-2023-52938 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2023-52938, GHSA-6gh5-4fvc-rw6c, UBUNTU-CVE-2023-52938.