VYPR
Unrated severityNVD Advisory· Published Aug 23, 2022· Updated Aug 3, 2024

CVE-2021-3975

CVE-2021-3975

Description

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.

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Affected products

166

Patches

Vulnerability mechanics

References

6

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