Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-3975

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 46.7%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2021-3975


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