CVE-2022-50662 RDMA/hns: fix memory leak in hns_roce_alloc_mr()

Not scored Published 9 Dec 2025 Updated 11 May 2026

A memory leak in the Linux kernel RDMA driver allows local attackers to cause denial of service by exhausting system memory.

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-2022-50662?

CVE-2022-50662 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:

RDMA/hns: fix memory leak in hns_roce_alloc_mr()

When hns_roce_mr_enable() failed in hns_roce_alloc_mr(), mr_key is not released. Compiled test only.

Which versions are affected by CVE-2022-50662?

How do I fix CVE-2022-50662?

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-2022-50662 being exploited?

There is no known exploitation of CVE-2022-50662 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2022-50662, GHSA-h5c7-rmx3-jxq4, UBUNTU-CVE-2022-50662.