CVE-2022-50821 SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails
A memory leak in the Linux kernel SUNRPC module allows attackers to cause a denial of service by triggering a failure in gss_read_proxy_verf.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50821?
CVE-2022-50821 is a memory corruption vulnerability in Linux, published on 30 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails
Which versions are affected by CVE-2022-50821?
How do I fix CVE-2022-50821?
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-2022-50821 being exploited?
There is no known exploitation of CVE-2022-50821 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50821, GHSA-mvq3-3j6q-8x8g, UBUNTU-CVE-2022-50821.