CVE-2025-38676 (GCVE-0-2025-38676)
Vulnerability from cvelistv5 – Published: 2025-08-26 13:07 – Updated: 2026-05-23 16:00
VLAI
EPSS
VEX
Title
iommu/amd: Avoid stack buffer overflow from kernel cmdline
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu/amd: Avoid stack buffer overflow from kernel cmdline
While the kernel command line is considered trusted in most environments,
avoid writing 1 byte past the end of "acpiid" if the "str" argument is
maximum length.
Severity
7.8 (High)
Assigner
References
10 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
f2a5ec7f7b28f9b9cd5fac232ff51019a7f7b9e9 , < a732502bf3bbe859613b6d7b2b0313b11f0474ac
(git)
Affected: c513043e0afe6a8ba79d00af358655afabb576d2 , < 0ad8509b468fa1058f4f400a1829f29e4ccc4de8 (git) Affected: 2ae19ac3ea82a5b87a81c10adbb497c9e58bdd60 , < 9ff52d3af0ef286535749e14e3fe9eceb39a8349 (git) Affected: b6b26d86c61c441144c72f842f7469bb686e1211 , < 8f80c633cba144f721d38d9380f23d23ab7db10e (git) Affected: b6b26d86c61c441144c72f842f7469bb686e1211 , < 4bdb0f78bddbfa77d3ab458a21dd9cec495d317a (git) Affected: b6b26d86c61c441144c72f842f7469bb686e1211 , < 736db11c86f03e717fc4bf771d05efdf10d23acb (git) Affected: b6b26d86c61c441144c72f842f7469bb686e1211 , < 8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec (git) Affected: 5e97dc748d13fad582136ba0c8cec215c7aeeb17 (git) Affected: 63cd11165e5e0ea2012254c764003eda1f9adb7d (git) Affected: 5.10.175 , < 5.10.241 (semver) Affected: 5.15.103 , < 5.15.190 (semver) Affected: 6.1.16 , < 6.1.149 (semver) Affected: 5.4.237 , < 5.5 (semver) Affected: 6.2.3 , < 6.3 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.3
Unaffected: 0 , < 6.3 (semver) Unaffected: 5.10.241 , ≤ 5.10.* (semver) Unaffected: 5.15.190 , ≤ 5.15.* (semver) Unaffected: 6.1.149 , ≤ 6.1.* (semver) Unaffected: 6.6.103 , ≤ 6.6.* (semver) Unaffected: 6.12.44 , ≤ 6.12.* (semver) Unaffected: 6.16.4 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC CN 4100 |
Affected:
0 , < V5.0
(custom)
|
guessed |
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"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-08-26T13:15:32.147",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0ad8509b468fa1058f4f400a1829f29e4ccc4de8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/4bdb0f78bddbfa77d3ab458a21dd9cec495d317a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/736db11c86f03e717fc4bf771d05efdf10d23acb"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/8f80c633cba144f721d38d9380f23d23ab7db10e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9ff52d3af0ef286535749e14e3fe9eceb39a8349"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a732502bf3bbe859613b6d7b2b0313b11f0474ac"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-30T01:14:35+00:00",
"cve": "CVE-2025-38676",
"id": "CVE-2025-38676",
"initial_release_date": "2025-08-26T00:00:00+00:00",
"product_status:known_affected": "232",
"product_status:known_not_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: iommu/amd: Avoid stack buffer overflow from kernel cmdline",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38676.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-29T01:17:49Z",
"cve": "CVE-2025-38676",
"id": "CVE-2025-38676",
"initial_release_date": "2025-08-26T23:23:09Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "461",
"product_status:known_not_affected": "338",
"product_status:recommended": "472",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-38676",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38676.json",
"version": "47"
}
}
}
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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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