Is CVE-2020-8649 in the CISA KEV catalog?

No. CVE-2020-8649 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-8649?

CVE-2020-8649 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-8649?

CVE-2020-8649 has an EPSS score of 0.49% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-8649?

Upgrade linux on debian 11 to 5.5.13-1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2020-8649

MEDIUM

5.9

CVSS v3

NVD

Description

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region function in drivers/video/console/vgacon.c.

CWE-416Use After Free

How to fix

Remediation Available

linuxDebian

Fixed in:5.5.13-1CVE-2020-8649

awsUbuntu

Fixed in:4.4.0-1098LSN-0068-1

Fixed in:4.4.0-1098LSN-0066-1

Fixed in:4.15.0-1054LSN-0066-1

Fixed in:4.15.0-1054LSN-0068-1

azureUbuntu

Fixed in:4.15.0-1063LSN-0066-1

generic-4.15Ubuntu

Fixed in:4.15.0-69LSN-0068-1

Fixed in:4.15.0-69LSN-0066-1

generic-4.4Ubuntu

Fixed in:4.4.0-168LSN-0066-1

Fixed in:4.4.0-168LSN-0068-1

Fixed in:4.4.0-168LSN-0066-1

lowlatency-4.15Ubuntu

Fixed in:4.15.0-69LSN-0066-1

Fixed in:4.15.0-69LSN-0068-1

lowlatency-4.4Ubuntu

Fixed in:4.4.0-168LSN-0068-1

Fixed in:4.4.0-168LSN-0066-1

Fixed in:4.4.0-168LSN-0068-1

oemUbuntu

Fixed in:4.15.0-1063LSN-0066-1

Fixed in:4.15.0-1063LSN-0068-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.49%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Exploit1

bugzilla.kernel.org

Third-Party Advisory5

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.