CVE-2021-47431

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 12.7% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-11.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-05-21 15:04Z2 YR AGO

Last updated

2026-08-11 02:05Z2 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

51456f1adc7a6516c28cbac2e3de91a81aa6152a6347a1d9351b1fd98ff36cbb

• git.kernel.orghttps://git.kernel.org/stable/c/83d857d6b0967b6709cd38750c3ce2ed8ced1a95
• git.kernel.orghttps://git.kernel.org/stable/c/621ddffb70db824eabd63d18ac635180fe9500f9
• git.kernel.orghttps://git.kernel.org/stable/c/18d1c5ea3798ba42cfa0f8b2264d873463facb03
• git.kernel.orghttps://git.kernel.org/stable/c/66805763a97f8f7bdf742fc0851d85c02ed9411f