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Vulnerability record · CVE-2022-0897 · published 25 March 2022

CVE-2022-0897: Redhat libvirt vulnerability

Redhat · Libvirt

A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

4.3 CVSS 3.1 Medium EPSS 1.0% · top 37.2% CWE-667 · CWE-667
4.3CVSS 3.1 base score, v2 4.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=2063883 Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
https://security.gentoo.org/glsa/202210-06 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2063883 Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
https://security.gentoo.org/glsa/202210-06 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-0897), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.