Use After Free Affecting libvirt-devel package, versions *


Severity

Recommended
low

Based on CentOS security rating.

Threat Intelligence

EPSS
1.22% (66th percentile)

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  • Snyk IDSNYK-CENTOS6-LIBVIRTDEVEL-2032638
  • published19 Nov 2021
  • disclosed17 Nov 2021

Introduced: 17 Nov 2021

CVE-2021-3975  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Centos:6 libvirt-devel.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-devel package and not the libvirt-devel package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1