| 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 |
| 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+deb8u7 | vulnerable |
| stretch (security), stretch (lts), stretch | 3.0.0-4+deb9u5 | vulnerable |
| buster | 5.0.0-4+deb10u1 | vulnerable |
| buster (security) | 5.0.0-4+deb10u2 | fixed |
| bullseye | 7.0.0-3+deb11u2 | vulnerable |
| bookworm | 9.0.0-4 | fixed |
| sid, trixie | 10.2.0-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - libvirt <no-dsa> (Minor issue)
[stretch] - libvirt <postponed> (Minor issue)
https://gitlab.com/libvirt/libvirt/-/commit/a4947e8f63c3e6b7b067b444f3d6cf674c0d7f36 (v8.2.0-rc1)
[jessie] - libvirt <postponed> (Minor issue)