CVE-2021-47237

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 13.4% 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 2026-06-17.

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 14:19Z2 YR AGO

Last updated

2026-05-11 13:50Z3 MO AGO

Reserved

2024-04-10

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
• CWE-402Transmission of Private Resources into a New Sphere ('Resource Leak')Class

Data version

5.2

Document digest

829010bc1e35fc2e12d9d9e044a5bf7ea1e6791082451bbc61fe86394f20de84

• git.kernel.orghttps://git.kernel.org/stable/c/c634ba0b4159838ff45a60d3a0ace3b4118077a5
• git.kernel.orghttps://git.kernel.org/stable/c/3942d0f9ace1a95a74930b5b4fc0e5005c62b37b
• git.kernel.orghttps://git.kernel.org/stable/c/765a8a04f828db7222b36a42b1031f576bfe95c3
• git.kernel.orghttps://git.kernel.org/stable/c/c16c4716a1b5ba4f83c7e00da457cba06761f119
• git.kernel.orghttps://git.kernel.org/stable/c/a49cbb762ef20655f5c91abdc13658b0af5e159d
• git.kernel.orghttps://git.kernel.org/stable/c/290b0b6432e2599021db0b8d6046f756d931c29f
• git.kernel.orghttps://git.kernel.org/stable/c/f4de2b43d13b7cf3ced9310e371b90c836dbd7cd
• git.kernel.orghttps://git.kernel.org/stable/c/7edcc682301492380fbdd604b4516af5ae667a13