CVE-2022-0897
First published: Mon Mar 14 2022(Updated: )
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).
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libvirt | <0:8.5.0-7.el9_1 | 0:8.5.0-7.el9_1 |
| Redhat Libvirt | <=1.1.1 | |
| NetApp ONTAP Select Deploy administration utility | ||
| redhat/libvirt 8.0.0 | <8 | 8 |
| debian/libvirt | 7.0.0-3+deb11u3 9.0.0-4+deb12u1 10.7.0-3 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-0897 https://nvd.nist.gov/vuln/detail/CVE-2022-0897
- https://bugzilla.redhat.com/show_bug.cgi?id=2063883
- https://access.redhat.com/errata/RHSA-2022:7472
- https://access.redhat.com/errata/RHSA-2022:8003
- https://access.redhat.com/security/cve/CVE-2022-0897
- https://security.gentoo.org/glsa/202210-06
- https://gitlab.com/libvirt/libvirt/-/commit/a4947e8f63c3e6b7b067b444f3d6cf674c0d7f36
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2068431
- https://access.redhat.com/security/cve/cve-2022-0897
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://launchpad.net/bugs/cve/CVE-2022-0897
- https://security-tracker.debian.org/tracker/CVE-2022-0897
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0897
- https://nvd.nist.gov/vuln/detail/CVE-2022-0897
- https://ubuntu.com/security/CVE-2022-0897
Frequently Asked Questions
What is CVE-2022-0897?
CVE-2022-0897 is a vulnerability found in the libvirt nwfilter driver that allows concurrent modification of the driver's nwfilters object.
What is the severity of CVE-2022-0897?
CVE-2022-0897 has a severity rating of medium.
How does CVE-2022-0897 affect libvirt?
CVE-2022-0897 affects libvirt by failing to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances, allowing concurrent modification of the driver's nwfilters object.
Which versions of libvirt are affected by CVE-2022-0897?
Versions 4.0.0-1ubuntu8.21, 6.0.0-0ubuntu8.16, 7.6.0-0ubuntu1.2, 8.0.0-1ubuntu7.5, and 9.0.0-4 are affected by CVE-2022-0897.
How can CVE-2022-0897 be fixed?
To fix CVE-2022-0897, update libvirt to version 4.0.0-1ubuntu8.21 or later.
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