CVE-2025-38702 (GCVE-0-2025-38702)
Vulnerability from cvelistv5 – Published: 2025-09-04 15:32 – Updated: 2026-07-14 12:42
VLAI
EPSS
VEX
Title
fbdev: fix potential buffer overflow in do_register_framebuffer()
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbdev: fix potential buffer overflow in do_register_framebuffer()
The current implementation may lead to buffer overflow when:
1. Unregistration creates NULL gaps in registered_fb[]
2. All array slots become occupied despite num_registered_fb < FB_MAX
3. The registration loop exceeds array bounds
Add boundary check to prevent registered_fb[FB_MAX] access.
Severity
7.8 (High)
Assigner
References
9 references
Impacted products
6 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5c3f5a25c62230b7965804ce7a2e9305c3ca3961
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cbe740de32bb0fb7a5213731ff5f26ea6718fca3 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 806f85bdd3a60187c21437fc51baace11f659f35 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2828a433c7d7a05b6f27c8148502095101dd0b09 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 248b2aab9b2af5ecf89d9d7955a2ff20c4b4a399 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 523b84dc7ccea9c4d79126d6ed1cf9033cf83b05 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 6.1.149 , ≤ 6.1.* (semver) Unaffected: 6.6.103 , ≤ 6.6.* (semver) Unaffected: 6.12.43 , ≤ 6.12.* (semver) Unaffected: 6.15.11 , ≤ 6.15.* (semver) Unaffected: 6.16.2 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC CN 4100 |
Affected:
0 , < V5.0
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed |
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Party Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-032379.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-082556.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-30T01:15:14+00:00",
"cve": "CVE-2025-38702",
"id": "CVE-2025-38702",
"initial_release_date": "2025-09-04T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: fbdev: fix potential buffer overflow in do_register_framebuffer()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38702.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-28T16:59:24Z",
"cve": "CVE-2025-38702",
"id": "CVE-2025-38702",
"initial_release_date": "2025-09-04T23:23:45Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "692",
"product_status:known_not_affected": "37",
"product_status:recommended": "501",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-38702",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38702.json",
"version": "56"
}
}
}
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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.
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.
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