CVE-2023-31364 Denial of service in AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
A malicious guest VM can flood the host with memory writes via the IOMMU, causing a fatal machine check error and denial of service on AMD EPYC systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-31364?
CVE-2023-31364 is a high-severity denial of service vulnerability in AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics, published on 26 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service.
Weakness: CWE-119
Which versions are affected by CVE-2023-31364?
How do I fix CVE-2023-31364?
No fix has been published for CVE-2023-31364 yet. Limit exposure of the affected software until one is available.
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-2023-31364 being exploited?
There is no known exploitation of CVE-2023-31364 in the wild and no public exploit code.
Sources
Also known as GHSA-xxv2-rmf4-wfx2.