CVE-2013-2016: A flaw was found in the way qemu v1.3.0 and later (virtio-rng) validates addresses when guest accesses the...

Security readout for executives and security teams

This is a host-escape class flaw in QEMU's virtio-rng handling. A privileged user inside a guest VM could abuse weak address validation for virtio device configuration space to access QEMU memory on the host, potentially raising privileges outside the VM. The sources do not provide CVSS scoring or evidence of active exploitation. Exposure is most relevant to virtualization hosts running affected QEMU versions and offering virtio-rng or similar small-config-space virtio devices to guests. The attacker position described is privileged access inside a guest VM, not unauthenticated network access. Prioritize remediation on shared virtualization infrastructure because the issue crosses the guest-host isolation boundary. Urgency is lower for isolated, trusted guest environments, but unsupported or unpatched QEMU hosts should not remain exposed. Mitigation focus: Apply vendor-supported QEMU updates for affected virtualization hosts.; Confirm updates include the upstream QEMU fix commit for this issue.; Prioritize hosts running untrusted or multi-tenant guest workloads..

Prepared

Jun 6, 2026, 03:31 UTC (UTC+00:00)

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