CVE-2020-14394

Name: CVE-2020-14394
Creator: NVD / NIST
Published: 2022-08-17T21:15:07.913+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.2/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2020-14394 is a low-severity vulnerability rated 3.2/10 on the CVSS scale. An infinite loop flaw was found in the USB xHCI controller emulation of QEMU while computing the length of the Transfer Request Block (TRB) Ring. This flaw allows a privileged guest user to hang the QEMU process on the host, resulting in a denial of service.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

An infinite loop flaw was found in the USB xHCI controller emulation of QEMU while computing the length of the Transfer Request Block (TRB) Ring. This flaw allows a privileged guest user to hang the QEMU process on the host, resulting in a denial of service.

Metrics

CVSS 3.1

3.2/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

EPSS Probability

0.36%

28.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qemu	Qemu	6.1.50
Fedoraproject	Extra Packages For Enterprise Linux	7.0
Fedoraproject	Fedora	33
Fedoraproject	Fedora	37
Redhat	Openstack Platform	10.0
Redhat	Openstack Platform	13.0
Redhat	Enterprise Linux	5.0
Redhat	Enterprise Linux	6.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1908004Exploit, Issue Tracking, Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/646Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
https://bugzilla.redhat.com/show_bug.cgi?id=1908004Exploit, Issue Tracking, Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/646Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/

Timeline

Published: Aug 17, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14394?

How severe is CVE-2020-14394?

CVE-2020-14394 has a CVSS score of 3.2/10 (LOW severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14394?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14394?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST