CVE-2011-2212: Buffer overflow in the virtio subsystem in qemu-kvm 0.14.0 and earlier allows privileged guest users to cau...

Security readout for executives and security teams

CVE-2011-2212 is an old qemu-kvm virtio flaw. A privileged user inside a guest VM could trigger a buffer overflow that may crash the guest or gain privileges. The main business concern is legacy virtualization infrastructure that still runs qemu-kvm 0.14.0 or earlier. Most modern environments are unlikely to run qemu-kvm 0.14.0 or earlier. Exposure is most plausible on old, unsupported virtualization hosts, appliances, or long-lived Linux platforms using virtio devices with guest administrators or tenants. Prioritize as a legacy infrastructure risk. It is not supported as actively exploited by the provided sources, but any affected hypervisor with untrusted guest administrators deserves prompt remediation or isolation. Mitigation focus: Apply vendor qemu-kvm updates referenced by Red Hat, Debian, Ubuntu, or SUSE advisories.; Retire or isolate hosts running qemu-kvm 0.14.0 or earlier.; Restrict privileged guest administration to trusted users until affected hypervisors are updated..

Prepared

Jun 24, 2026, 12:34 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.