CVE-2016-7466

Original summary

Normalized public record · Updated Oct 23, 2026

Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device.

Publisher and source text is retained separately from QFinch interpretation.

Affected products

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

1. Confirm the affected product and reachable code path exist in your environment.
2. Apply the vendor-supported patch or mitigation from the primary advisory.
3. Rescan the exact deployed revision and retain verification evidence.

Evidence coverage

SSVC priority

LOW

Confidence

Not available

Aliases

None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

1. [oss-security] 20160920 CVE Request Qemu: usb: xhci memory leakage during device unplug ↗
2. [oss-security] 20160920 Re: CVE Request Qemu: usb: xhci memory leakage during device unplug ↗
3. GLSA-201611-11 ↗
4. 93029 ↗
5. RHSA-2017:2392 ↗
6. openSUSE-SU-2016:3237 ↗
7. git.qemu.org ↗
8. [qemu-devel] 20160913 [PATCH v2] usb:xhci:fix memory leak in usb_xhci_exit ↗
9. RHSA-2017:2408 ↗

Record history

Published Dec 10, 2016 · Last refreshed Oct 23, 2026