CVE-2021-47542

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 16.2% 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

Modified. 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

2024-05-24 15:09Z2 YR AGO

Last updated

2026-05-11 13:56Z5 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-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

fce73ae3ba4a1f0cc8a43fbedd510ddd2ffd97c47b27f5ab491dc12711fe5021

• git.kernel.orghttps://git.kernel.org/stable/c/3a061d54e260b701b538873b43e399d9b8b83e03
• git.kernel.orghttps://git.kernel.org/stable/c/b4f217d6fcc00c3fdc0921a7691f30be7490b073
• git.kernel.orghttps://git.kernel.org/stable/c/550658a2d61e4eaf522c8ebc7fad76dc376bfb45
• git.kernel.orghttps://git.kernel.org/stable/c/57af54a56024435d83e44c78449513b414eb6edf
• git.kernel.orghttps://git.kernel.org/stable/c/bbeb0325a7460ebf1e03f5e0bfc5c652fba9519f
• git.kernel.orghttps://git.kernel.org/stable/c/15fa12c119f869173f9b710cbe6a4a14071d2105
• git.kernel.orghttps://git.kernel.org/stable/c/c5ef33c1489b2cd74368057fa00b5d2183bb5853
• git.kernel.orghttps://git.kernel.org/stable/c/e2dabc4f7e7b60299c20a36d6a7b24ed9bf8e572