CVE-2021-47231

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 13.1% 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 13:50Z5 MO AGO

Reserved

2024-04-10

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

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

c26138024a659e0f6bdaa4b224b5d6fb226a46c111972acefd9f6a1e39454505

• git.kernel.orghttps://git.kernel.org/stable/c/89df95ce32be204eef2e7d4b2f6fb552fb191a68
• git.kernel.orghttps://git.kernel.org/stable/c/a115198caaab6d663bef75823a3c5f0802306d60
• git.kernel.orghttps://git.kernel.org/stable/c/6f87c0e21ad20dd3d22108e33db1c552dfa352a0
• git.kernel.orghttps://git.kernel.org/stable/c/6bd3d80d1f019cefa7011056c54b323f1d8b8e83
• git.kernel.orghttps://git.kernel.org/stable/c/d0760a4ef85697bc756d06eae17ae27f3f055401
• git.kernel.orghttps://git.kernel.org/stable/c/91c02557174be7f72e46ed7311e3bea1939840b0