CVE-2022-50777 net: phy: xgmiitorgmii: Fix refcount leak in xgmiitorgmii_probe
A refcount leak in the Linux kernel's XGMII-to-RGMII PHY driver can lead to resource exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50777?
CVE-2022-50777 is a memory corruption vulnerability in Linux, published on 24 Dec 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: xgmiitorgmii: Fix refcount leak in xgmiitorgmii_probe
of_phy_find_device() return device node with refcount incremented. Call put_device() to relese it when not needed anymore.
Which versions are affected by CVE-2022-50777?
How do I fix CVE-2022-50777?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-50777 being exploited?
There is no known exploitation of CVE-2022-50777 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50777, GHSA-2jvw-hf8m-phpv, UBUNTU-CVE-2022-50777.