CVE-2021-47579

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

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

EPSS percentile

Ranks above 14.6% 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

2024-06-19 14:53Z2 YR AGO

Last updated

2026-05-11 13:57Z3 MO AGO

Reserved

2024-05-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-457Use of Uninitialized VariableVariant

Data version

5.2

Document digest

e6d2cbf866ce86a78653cf2ae1395914191325cccd97fbaf9b6ad3d69346595d

• git.kernel.orghttps://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8
• git.kernel.orghttps://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0
• git.kernel.orghttps://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7
• git.kernel.orghttps://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02
• git.kernel.orghttps://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c