CVE-2023-54230 amba: bus: fix refcount leak
A refcount leak in the Linux kernel AMBA bus driver can lead 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-2023-54230?
CVE-2023-54230 is a denial of service 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:
amba: bus: fix refcount leak
commit 5de1540b7bc4 ("drivers/amba: create devices from device tree") increases the refcount of of_node, but not releases it in amba_device_release, so there is refcount leak. By using of_node_put to avoid refcount leak.
Which versions are affected by CVE-2023-54230?
How do I fix CVE-2023-54230?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-54230 being exploited?
There is no known exploitation of CVE-2023-54230 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54230, DEBIAN-CVE-2023-54230, GHSA-9qf5-c4fq-57p4, UBUNTU-CVE-2023-54230.