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8.3
VM Can Crash Host Server with Flood of Malicious Writes
CVE-2023-31364
Summary
A malicious virtual machine can cause a host server to crash by sending a large number of write requests. This can happen when a guest virtual machine is not properly managed, and it can lead to a denial of service. To fix this issue, update the virtualization software to the latest version or patch level.
Original title
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 mach...
Original 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.
nvd CVSS4.0
8.3
Vulnerability type
CWE-119
Buffer Overflow
Published: 26 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026