Browsing Tag
Virtualization Security
1 post
Security coverage for hypervisors, virtual machines, guest-host isolation, cloud tenant boundaries, and virtualized infrastructure.
Januscape KVM Flaw Turns Nested Virtualization Into a Host-Escape Risk
CVE-2026-53359, dubbed Januscape, is a 16-year-old Linux KVM shadow MMU flaw that can let a guest VM crash, and potentially escape to, an x86 host when nested virtualization is exposed. Operators should treat it as a hypervisor-boundary patch event, not a routine kernel update.
