virtualization risk

The virtualization risk tag covers security vulnerabilities and denial-of-service threats within virtualized environments, particularly those involving QEMU and its device emulation. A key example is CVE-2021-20255, a bug in QEMU's eepro100 network device that allows a guest to trigger infinite recursion and stack overflow, causing a local denial-of-service against the host and other virtual machines. This tag focuses on risks arising from hypervisor bugs, guest-to-host escape vectors, and resource exhaustion attacks that can compromise isolation in virtualized systems. Discussions emphasize understanding and mitigating such vulnerabilities to maintain secure virtualization deployments.