CVE-2021-4147
6.5
MEDIUM
CVSS 3.1
EPSS 0.08%
Description
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.
How to fix CVE-2021-4147
To remediate CVE-2021-4147, upgrade the affected package to a fixed version below.
- Debian/libvirt—upgrade to 7.0.0-3+deb11u3 or later
Is CVE-2021-4147 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 7.0.0-3+deb11u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |