CVE-2020-25603

A security flaw was found in Xen. Event channels control structures can be accessed without lock as long as the port is considered to be valid. A malicious guest may be able to cause a hypervisor crash resulting in a denial of service (DoS). An information leak and privilege escalation cannot be excluded. The highest threat from this vulnerability is to system availability.

Mitigation

There is no known mitigation for this flaw apart from applying the patch.