CVE-2021-3947: Qemu

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.

Affected products

• Qemu Qemu: from 6.0.0, up to and including 6.1.0; version 6.2.0 only

Published 2022-02-18. Last modified 2026-06-17.