CVE-2021-47121

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 13.9% 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

2024-03-15 20:14Z2 YR AGO

Last updated

2026-05-11 13:48Z3 MO AGO

Reserved

2024-03-04

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

03d2f8529d98548a09bb3d3756825d3a59f2e222c1a3d8a001f539da270da169

• git.kernel.orghttps://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294
• git.kernel.orghttps://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141
• git.kernel.orghttps://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76
• git.kernel.orghttps://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f
• git.kernel.orghttps://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886
• git.kernel.orghttps://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051
• git.kernel.orghttps://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1
• git.kernel.orghttps://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb