CVE-2021-47223

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 14.7% 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

Moderate. 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 13:50Z3 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-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

0a8132906b56cb346d9b790af6965e45fd590a98dc28f8fb84c4111d713e9221

• git.kernel.orghttps://git.kernel.org/stable/c/ad7feefe7164892db424c45687472db803d87f79
• git.kernel.orghttps://git.kernel.org/stable/c/24a6e55f17aa123bc1fc54b7d3c410b41bc16530
• git.kernel.orghttps://git.kernel.org/stable/c/a2241e62f6b4a774d8a92048fdf59c45f6c2fe5c
• git.kernel.orghttps://git.kernel.org/stable/c/fe0448a3fad365a747283a00a1d1ad5e8d6675b7
• git.kernel.orghttps://git.kernel.org/stable/c/abb02e05cb1c0a30dd873a29f33bc092067dc35d
• git.kernel.orghttps://git.kernel.org/stable/c/58e2071742e38f29f051b709a5cca014ba51166f