CVE-2020-27820

Name: CVE-2020-27820
Creator: NVD / NIST
Published: 2021-11-03T00:15:07.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.7/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2020-27820 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).

Metrics

CVSS 3.1

4.7/10

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

EPSS Probability

0.47%

37.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	> 2.6.12, < 5.4.162
Linux	Linux Kernel	> 5.5, < 5.10.82
Linux	Linux Kernel	> 5.11, < 5.15.5
Linux	Linux Kernel	2.6.12
Fedoraproject	Fedora	33
Oracle	Communications Cloud Native Core Binding Support Function	22.1.3
Oracle	Communications Cloud Native Core Network Exposure Function	22.1.1
Oracle	Communications Cloud Native Core Policy	22.2.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1901726Issue Tracking, Patch, Third Party Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/Mailing List, Vendor Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/Mailing List, Vendor Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/Mailing List, Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1901726Issue Tracking, Patch, Third Party Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/Mailing List, Vendor Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/Mailing List, Vendor Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/Mailing List, Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory

Timeline

Published: Nov 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27820?

How severe is CVE-2020-27820?

CVE-2020-27820 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27820?

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-2020-27820?

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

Scan your code now

Source: NVD / NIST