CVE-2022-49437 powerpc/xive: Fix refcount leak in xive_spapr_init
A missing reference count decrement in the Linux kernel PowerPC XIVE driver can lead to a resource leak, potentially causing 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-2022-49437?
CVE-2022-49437 is a medium-severity 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:
powerpc/xive: Fix refcount leak in xive_spapr_init
of_find_compatible_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak.
Which versions are affected by CVE-2022-49437?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49437?
Apply the vendor's patch.
Is CVE-2022-49437 being exploited?
There is no known exploitation of CVE-2022-49437 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49437, GHSA-mgjf-p92m-4xxw, ROOT-OS-DEBIAN-11-CVE-2022-49437, UBUNTU-CVE-2022-49437.