CVE-2026-42492

Name of the Vulnerable Software and Affected Versions Xenstore (affected versions not specified)

Description Xenstore uses XEN DOMCTL get domain state to track the appearance and disappearance of domains. The management of the bitmap supporting this operation is linked to the binding of the VIRQ DOM EXC virtual IRQ. An error path exists that allows unprivileged domains to trigger the teardown of the bitmap, even if it was not previously set up.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.