CVE-2026-64172

CVE-2026-64172 documents a Linux kernel/KVM vulnerability on Hygon Family 18h CPUs (Zen1-derived) where AVIC IPI virtualization could fail to wake blocking vCPUs due to a stale IsRunning=1 bit during ICR emulation. The root cause mirrors AMD Family 17h erratum #1235 and is mitigated by extending ...