Vulnerability · Published Mar 25, 2022 · Assigned by redhat
CVE-2022-0897
Medium 4.3
In plain English
A medium-severity security flaw in libvirt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)1.0%top 35.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | libvirt | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-client | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-config-network | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-config-nwfilter | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-interface | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-network | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-nodedev | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-nwfilter | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-qemu | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-secret | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-core | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-disk | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-iscsi | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-logical | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-mpath | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-rbd | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-driver-storage-scsi | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-daemon-kvm | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-devel | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-docs | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-libs | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-lock-sanlock | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| AlmaLinux:9 | libvirt-nss | 8.5.0-7.el9_1 | ALSA-2022:8003 |
| Debian:12 | libvirt | 8.2.0-1 | DEBIAN-CVE-2022-0897 |
| Debian:13 | libvirt | 8.2.0-1 | DEBIAN-CVE-2022-0897 |
| Debian:14 | libvirt | 8.2.0-1 | DEBIAN-CVE-2022-0897 |
| Rocky Linux:8 | hivex | 0:1.3.18-23.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | hivex | 0:1.3.18-23.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | libguestfs | 1:1.44.0-9.module+el8.7.0+1084+97b81f61.rocky | RLSA-2022:7472 |
| Rocky Linux:8 | libguestfs-winsupport | 0:8.6-1.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | libguestfs-winsupport | 0:8.6-1.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | libnbd | 0:1.6.0-5.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | libnbd | 0:1.6.0-5.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | libtpms | 0:0.9.1-1.20211126git1ff6fe1f43.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | libvirt | 0:8.0.0-10.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:9 | libvirt | 0:8.5.0-7.3.el9_1 | RLSA-2022:8003 |
| Rocky Linux:8 | libvirt-dbus | 0:1.3.0-2.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | libvirt-dbus | 0:1.3.0-2.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux:8 | libvirt-dbus | 0:1.3.0-2.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | libvirt-python | 0:8.0.0-2.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | nbdkit | 0:1.24.0-4.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | perl-Sys-Virt | 0:8.0.0-1.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | perl-Sys-Virt | 0:8.0.0-1.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | qemu-kvm | 5:6.2.0-20.module+el8.7.0+1084+97b81f61.2 | RLSA-2022:7472 |
| Rocky Linux:8 | seabios | 0:1.16.0-3.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.6.0+847+b490afdd | RLSA-2022:7472 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.4.0+534+4680a14e | RLSA-2022:7472 |
| Rocky Linux:8 | supermin | 0:5.2.1-2.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | swtpm | 0:0.7.0-4.20211109gitb79fd91.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Rocky Linux:8 | virt-v2v | 1:1.42.0-21.module+el8.7.0+1084+97b81f61 | RLSA-2022:7472 |
| Ubuntu:22.04:LTS | libvirt | 8.0.0-1ubuntu7.5 | USN-6126-1 |
| Ubuntu:22.04:LTS | libvirt | 8.0.0-1ubuntu7.5 | UBUNTU-CVE-2022-0897 |
Affected products (as reported)
Weakness: CWE-667