CVE-2021-4158: Qemu

Medium severity, CVSS 6.0. EPSS: 0.4% chance of exploitation in the next 30 days.

A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Affected products

• Qemu Qemu: from 6.0.0, before 7.0.0 (fixed in 7.0.0)
• Red Hat Enterprise Linux: version 9.0 only

Published 2022-08-24. Last modified 2026-06-17.