CVE-2022-49472 net: phy: micrel: Allow probing without .driver_data
A missing null check in the Linux kernel's Micrel PHY driver causes a crash when probing without driver data, leading to denial of service.
- 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-2022-49472?
CVE-2022-49472 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:
net: phy: micrel: Allow probing without .driver_data
Currently, if the .probe element is present in the phy_driver structure and the .driver_data is not, a NULL pointer dereference happens.
Allow passing .probe without .driver_data by inserting NULL checks for priv->type.
Weakness: CWE-476
Which versions are affected by CVE-2022-49472?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49472?
Apply the vendor's patch.
Is CVE-2022-49472 being exploited?
There is no known exploitation of CVE-2022-49472 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49472, GHSA-r33j-vf7v-cq2v, UBUNTU-CVE-2022-49472.