16-Year-Old Linux KVM Flaw Lets Guest VMs Escape to Host on Intel and AMD x86 Systems
A use-after-free bug in Linux's KVM shadow MMU code, tracked as CVE-2026-53359 and named Januscape, lets a guest VM corrupt the host kernel's shadow-page state on both Intel and AMD x86 systems; researcher Hyunwoo Kim reported it and said it went unnoticed...