CVE-2021-47643

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.4% 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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2025-02-26 01:54Z1 YR AGO

Last updated

2026-05-11 13:58Z3 MO AGO

Reserved

2025-02-26

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

5836c44c7ec99cd9332206d32cd5a34b0eafb9ee7f0667b1aaecad4f7d4c1502

• git.kernel.orghttps://git.kernel.org/stable/c/99e3f83539cac6884a4df02cb204a57a184ea12b
• git.kernel.orghttps://git.kernel.org/stable/c/2011363c196846c083649c91ed30aeef64358d52
• git.kernel.orghttps://git.kernel.org/stable/c/382e0f6958ef34eb093127b6d74c12f3b8fd0904
• git.kernel.orghttps://git.kernel.org/stable/c/93ef3fdf3b6633c58f049e5a6be755777dde4340
• git.kernel.orghttps://git.kernel.org/stable/c/52cdb013036391d9d87aba5b4fc49cdfc6ea4b23