CVE-2022-50811 erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
A missing unmap operation in the Linux kernel EROFS filesystem can leak meta buffers, potentially leading 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-2022-50811?
CVE-2022-50811 is a memory corruption vulnerability in Linux, published on 30 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:
erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
Otherwise, meta buffers could be leaked.
Which versions are affected by CVE-2022-50811?
How do I fix CVE-2022-50811?
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-2022-50811 being exploited?
There is no known exploitation of CVE-2022-50811 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50811, GHSA-8fxj-p2h6-vh9g, ROOT-OS-UBUNTU-2204-CVE-2022-50811, UBUNTU-CVE-2022-50811.