CVE-2016-9907: Quick Emulator (Qemu) built with the USB redirector usb-guest support is vulnerable to a memory leakage flaw.

Security readout for executives and security teams

This vulnerability affects QEMU builds with USB redirection guest support. A user or process inside a guest VM could trigger a memory leak on the host when USB redirection is destroyed, potentially degrading or denying service on the virtualization host. Exposure is most likely on virtualization hosts running QEMU with USB redirector usb-guest support enabled or packaged. The source bundle does not identify exact affected versions or distributions beyond referenced vendor advisories. Handle as a moderate infrastructure reliability risk. Prioritize shared virtualization hosts and any environment where guest users are not fully trusted. The main business concern is host disruption rather than confirmed data theft or active exploitation. Mitigation focus: Apply relevant QEMU security updates from your operating-system vendor.; Review Debian, Red Hat, and Gentoo advisories for fixed package details.; Prioritize hosts running untrusted or multi-tenant guest workloads..

Prepared

Jun 13, 2026, 12:51 UTC (UTC+00:00)

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