CVE-2023-4130 (GCVE-0-2023-4130)
Vulnerability from cvelistv5 – Published: 2025-08-16 13:27 – Updated: 2026-08-15 12:23
VLAI
EPSS
VEX
Title
ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
Summary
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
There are multiple smb2_ea_info buffers in FILE_FULL_EA_INFORMATION request
from client. ksmbd find next smb2_ea_info using ->NextEntryOffset of
current smb2_ea_info. ksmbd need to validate buffer length Before
accessing the next ea. ksmbd should check buffer length using buf_len,
not next variable. next is the start offset of current ea that got from
previous ea.
Severity
8.1 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < aeb974907642be095e38ecb1a400ca583958b2b0
(git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < f339d76a3a972601d0738b881b099d49ebbdc3a2 (git) Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 4bf629262f9118ee91b1c3a518ebf2b3bcb22180 (git) Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 79ed288cef201f1f212dfb934bcaac75572fb8f6 (git) |
|
| Linux | Linux |
Affected:
5.15
Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.127 , ≤ 5.15.* (semver) Unaffected: 6.1.46 , ≤ 6.1.* (semver) Unaffected: 6.4.11 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix) |
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}
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"id": "CVE-2023-4130",
"lastModified": "2026-08-15T13:17:39.713",
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"redhat_vex": {
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"current_release_date": "2026-08-04T19:32:32+00:00",
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"id": "CVE-2023-4130",
"initial_release_date": "2023-01-01T00:00:00+00:00",
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"title": "kernel: ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-4130.json",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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