Incorrect preprocessor directive placement in source code results in non-functional logic when HVM guests are compiled out of Xen

CVE-2023-46840

What is CVE-2023-46840?

A logic flaw in the Xen Hypervisor arises from the incorrect placement of a preprocessor directive within the source code. This misconfiguration leads to unintended behavior when the hypervisor support for hardware virtual machine (HVM) guests is disabled. The exploitation of this flaw could result in operational anomalies or inconsistencies, potentially impacting system reliability and security. It is essential for administrators to review their deployments of the Xen Hypervisor and ensure that they are updated to the latest versions to mitigate the risks associated with this vulnerability.

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