Is CVE-2021-4148 in the CISA KEV catalog?

No. CVE-2021-4148 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-4148?

CVE-2021-4148 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-4148?

CVE-2021-4148 has an EPSS score of 0.31% (23th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-4148?

Upgrade linux on debian 11 to 5.10.84-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-4148

MEDIUM

5.5

CVSS v3

NVD

Description

A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.

CWE-354

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.84-1CVE-2021-4148

Fixed in:5.14.16-1CVE-2021-4148

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

0.31%probability of exploitation in 30 days

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Patch2

Third-Party Advisory1

bugzilla.redhat.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.