Grygorii Strashko

**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.