CVE-2023-3301: Qemu

Medium severity, CVSS 5.6. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service.

Affected products

• Qemu Qemu: up to and including 8.0.3
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-09-13. Last modified 2026-06-17.