Is CVE-2021-38203 in the CISA KEV catalog?

No. CVE-2021-38203 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38203?

CVE-2021-38203 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-38203?

CVE-2021-38203 has an EPSS score of 0.36% (28th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38203?

Upgrade linux on debian 12 to 5.14.6-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-38203

MEDIUM

5.5

CVSS v3

NVD

Description

btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that trigger allocation of new system chunks during times when there is a shortage of free space in the system space_info.

CWE-667

How to fix

Remediation Available

linuxDebian

Fixed in:5.14.6-1CVE-2021-38203

linux-image-5.13.0-1014-oemUbuntu

Fixed in:5.13.0-1014.18USN-5096-1

linux-image-oem-20.04cUbuntu

Fixed in:5.13.0.1014.18USN-5096-1

linux-oem-5.13Ubuntu

Fixed in:5.13.0-1014.18USN-5096-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.36%probability of exploitation in 30 days

28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Patch2

Third-Party Advisory1

security.netapp.com

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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.