GHSA-CJRR-3F69-P92J
Vulnerability from github – Published: 2025-04-01 18:30 – Updated: 2025-11-03 21:33
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
ftrace: Avoid potential division by zero in function_stat_show()
Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case.
For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-21898"
],
"database_specific": {
"cwe_ids": [
"CWE-369"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-01T16:15:20Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Avoid potential division by zero in function_stat_show()\n\nCheck whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64}\nproduce zero and skip stddev computation in that case.\n\nFor now don\u0027t care about rec-\u003ecounter * rec-\u003ecounter overflow because\nrec-\u003etime * rec-\u003etime overflow will likely happen earlier.",
"id": "GHSA-cjrr-3f69-p92j",
"modified": "2025-11-03T21:33:20Z",
"published": "2025-04-01T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21898"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3d738b53ed6cddb68e68c9874520a4bf846163b5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5b3d32f607f0478b414b16516cf27f9170cf66c8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/746cc474a95473591853927b3a9792a2d671155b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/992775227843c9376773784b8b362add44592ad7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a1a7eb89ca0b89dc1c326eeee2596f263291aca3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ca381f60a3bb7cfaa618d73ca411610bd7fc3149"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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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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