CVE-2022-50663 net: stmmac: fix possible memory leak in stmmac_dvr_probe()
A memory leak in the Linux kernel's stmmac 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-2022-50663?
CVE-2022-50663 is a memory corruption vulnerability in Linux, published on 9 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: stmmac: fix possible memory leak in stmmac_dvr_probe()
The bitmap_free() should be called to free priv->af_xdp_zc_qps when create_singlethread_workqueue() fails, otherwise there will be a memory leak, so we add the err path error_wq_init to fix it.
Which versions are affected by CVE-2022-50663?
How do I fix CVE-2022-50663?
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-2022-50663 being exploited?
There is no known exploitation of CVE-2022-50663 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50663, GHSA-w8r8-r3c3-44hm, UBUNTU-CVE-2022-50663.