CVE-2026-31549 i2c: cp2615: fix serial string NULL-deref at probe
A NULL pointer dereference in the cp2615 I2C driver allows a malicious USB device to cause a kernel crash during probe.
- 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-2026-31549?
CVE-2026-31549 is a medium-severity vulnerability in Linux kernel, published on 24 Apr 2026. 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:
i2c: cp2615: fix serial string NULL-deref at probe
The cp2615 driver uses the USB device serial string as the i2c adapter name but does not make sure that the string exists.
Verify that the device has a serial number before accessing it to avoid triggering a NULL-pointer dereference (e.g. with malicious devices).
Weakness: CWE-476
Which versions are affected by CVE-2026-31549?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31549?
Apply the vendor's patch.
Is CVE-2026-31549 being exploited?
There is no known exploitation of CVE-2026-31549 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-31549, DEBIAN-CVE-2026-31549, GHSA-cx2j-r37j-67j2, ROOT-OS-DEBIAN-12-CVE-2026-31549, ROOT-OS-UBUNTU-2204-CVE-2026-31549, ROOT-OS-UBUNTU-2404-CVE-2026-31549 and 1 more.