CVE-2021-4147

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory redhat.com
Affected: n/a libvirt
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2034195 issue tracking patch vendor advisory
https://security.netapp.com/advisory/ntap-20220513-0004/ third party advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html mailing list

Frequently Asked Questions

What is the severity of CVE-2021-4147?
CVE-2021-4147 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4147?
To fix CVE-2021-4147, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4147 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-4147 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4147?
CVE-2021-4147 affects n/a libvirt.
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