CVE-2020-12430: Red Hat Enterprise Linux

Medium severity, CVSS 6.5. EPSS: 2.3% chance of exploitation in the next 30 days.

An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-only connection to cause a memory leak in the domstats command, resulting in a potential denial of service.

Affected products

• Red Hat Enterprise Linux: version 8.0 only
• Red Hat Libvirt: from 4.10.0, before 6.1.0 (fixed in 6.1.0)

Published 2020-04-28. Last modified 2026-06-17.