CVE-2022-0897

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).

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2063883	issue tracking
https://security.gentoo.org/glsa/202210-06	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html	mailing list

Frequently Asked Questions

What is the severity of CVE-2022-0897?: CVE-2022-0897 has been scored as a medium severity vulnerability.
How to fix CVE-2022-0897?: To fix CVE-2022-0897, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-0897 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-0897 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-0897?: CVE-2022-0897 affects n/a libvirt.

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Description

Category

CWE-667 – Improper Locking

References

Frequently Asked Questions