CVE-2022-49447 ARM: hisi: Add missing of_node_put after of_find_compatible_node
A missing reference count decrement in the Linux kernel ARM HiSilicon driver can lead to a memory leak, potentially causing resource exhaustion and denial of service.
- 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-2022-49447?
CVE-2022-49447 is a medium-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 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:
ARM: hisi: Add missing of_node_put after of_find_compatible_node
of_find_compatible_node will increment the refcount of the returned device_node. Calling of_node_put() to avoid the refcount leak
Which versions are affected by CVE-2022-49447?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49447?
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-2022-49447 being exploited?
There is no known exploitation of CVE-2022-49447 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49447, GHSA-fvcj-669r-qvmx, UBUNTU-CVE-2022-49447.