cvedb.io
CVE-2021-3975
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2022-08-23T20:15:08.427 · Last modified 2026-06-17T04:06:19.470

Summary

A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

Affected products

redhat — libvirt

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.