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).

Related CVEs

CVE-2022-0897

Key Information

GHSA ID

GHSA-4r2g-j5rc-7wqf

Published

March 26, 2022 12:00 AM

Last Modified

April 1, 2024 3:30 PM

CVSS Score

5.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: August 2, 2025 6:46 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.