CVE-2022-0897

Name	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).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3778-1, ELA-1161-1
Debian Bugs	1009075

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libvirt (PTS)	jessie, jessie (lts)	1.2.9-9+deb8u8	fixed
	stretch (security)	3.0.0-4+deb9u5	vulnerable
	stretch (lts), stretch	3.0.0-4+deb9u6	fixed
	buster (security), buster, buster (lts)	5.0.0-4+deb10u2	fixed
	bullseye	7.0.0-3+deb11u3	fixed
	bookworm	9.0.0-4+deb12u2	fixed
	sid, trixie	10.9.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libvirt	source	jessie	1.2.9-9+deb8u8	ELA-1161-1
libvirt	source	stretch	3.0.0-4+deb9u6	ELA-1161-1
libvirt	source	buster	5.0.0-4+deb10u2	DLA-3778-1
libvirt	source	bullseye	7.0.0-3+deb11u3
libvirt	source	(unstable)	8.2.0-1		1009075

[stretch] - libvirt <postponed> (Minor issue)
https://gitlab.com/libvirt/libvirt/-/commit/a4947e8f63c3e6b7b067b444f3d6cf674c0d7f36 (v8.2.0-rc1)