What is CVE-2020-27820?

CVE-2020-27820 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2020-27820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-27820?

CVE-2020-27820 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2020-27820?

No patch is currently available for CVE-2020-27820. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2020-27820 actively exploited?

CVE-2020-27820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2020-27820

Medium

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).

Package Linux Kernel

Published 2021-11-03

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2020-27820 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2020-27820 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/

Mailing List Vendor Advisory
Kernel.org
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/

Mailing List Vendor Advisory
Kernel.org
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/

Mailing List Vendor Advisory
Oracle
https://www.oracle.com/security-alerts/cpujul2022.html

Third Party Advisory
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=1901726
Patch

Details

CVE ID CVE-2020-27820

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2021-11-03

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-27820?

CVE-2020-27820 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2020-27820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-27820?

CVE-2020-27820 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2020-27820?

No patch is currently available for CVE-2020-27820. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2020-27820 actively exploited?

No — CVE-2020-27820 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →