CVE-2021-47258

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

Equal to or higher than the score of 14.4% 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 13:51Z5 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

046578f0a61be8c77df9cc449ad901d1092eb084ccbb11169d46c33081a8da11

• git.kernel.orghttps://git.kernel.org/stable/c/8958181c1663e24a13434448e7d6b96b5d04900a
• git.kernel.orghttps://git.kernel.org/stable/c/db08ce595dd64ea9859f7d088b51cbfc8e685c66
• git.kernel.orghttps://git.kernel.org/stable/c/2dc85045ae65b9302a1d2e2ddd7ce4c030153a6a
• git.kernel.orghttps://git.kernel.org/stable/c/79296e292d67fa7b5fb8d8c27343683e823872c8
• git.kernel.orghttps://git.kernel.org/stable/c/7a696ce1d5d16a33a6cd6400bbcc0339b2460e11
• git.kernel.orghttps://git.kernel.org/stable/c/45d83db4728127944b237c0c8248987df9d478e7
• git.kernel.orghttps://git.kernel.org/stable/c/66a834d092930cf41d809c0e989b13cd6f9ca006