CVE-2021-4147
libvirt: A flaw was found in the libvirt libxl driver
CVE-2021-4147 is fixed in 19 products on 1 platform, first by libnss-libvirt 4.0.0-1ubuntu8.21, released March 25, 2022. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0024
15th percentile
A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libnss-libvirt · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libnss-libvirt 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libnss-libvirt · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libnss-libvirt 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt · Debian 12.15 (bookworm) | 7.10.0-2 | DEBIAN-CVE-2021-4147 | Mar 25, 2022 |
| libvirt · Debian 13.5 (trixie) | 7.10.0-2 | DEBIAN-CVE-2021-4147 | Mar 25, 2022 |
| libvirt · Debian 14 | 7.10.0-2 | DEBIAN-CVE-2021-4147 | Mar 25, 2022 |
| libvirt-bin · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-bin 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-clients · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-clients 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-clients · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-clients 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-daemon 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-daemon · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-lxc · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-lxc 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-qemu · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-qemu 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-gluster · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-daemon-driver-storage-gluster 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-gluster · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-storage-gluster 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-rbd · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-daemon-driver-storage-rbd 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-rbd · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-storage-rbd 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-sheepdog · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-daemon-driver-storage-sheepdog 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-zfs · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-daemon-driver-storage-zfs 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-daemon-driver-storage-zfs · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-storage-zfs 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-vbox · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-vbox 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-driver-xen · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-driver-xen 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-system · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-daemon-system 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-daemon-system · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-system 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-system-systemd · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-system-systemd 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-daemon-system-sysv · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-daemon-system-sysv 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-sanlock · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-sanlock 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-sanlock · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-sanlock 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt-wireshark · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt-wireshark 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt-wireshark · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt-wireshark 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
| libvirt0 · Ubuntu 18.04.6 LTS (bionic) | 4.0.0-1ubuntu8.21 | libvirt0 4.0.0-1ubuntu8.21 | Mar 25, 2022 |
| libvirt0 · Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu8.16 | libvirt0 6.0.0-0ubuntu8.16 | Mar 25, 2022 |
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