CVE-2023-54215 virtio-vdpa: Fix cpumask memory leak in virtio_vdpa_find_vqs()
A memory leak in the Linux kernel's virtio-vdpa driver allows attackers to cause a denial of service by exhausting system memory.
- 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-2023-54215?
CVE-2023-54215 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:
virtio-vdpa: Fix cpumask memory leak in virtio_vdpa_find_vqs()
Free the cpumask allocated by create_affinity_masks() before returning from the function.
Which versions are affected by CVE-2023-54215?
How do I fix CVE-2023-54215?
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-2023-54215 being exploited?
There is no known exploitation of CVE-2023-54215 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54215, DEBIAN-CVE-2023-54215, GHSA-g4v8-cg96-4xjg, UBUNTU-CVE-2023-54215.