CVE-2021-4147

MEDIUM
6.5
CVSS Score
Published: March 25, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:19 AM UTC
3 products affected across 3 vendorsFedoraONTAP Select Deploy administration utilityLibvirt

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.33.02.33.0
Affected range stops below 2.33.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-667

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