GHSA-3XQ3-W9MF-92JR
Vulnerability from github – Published: 2025-09-11 18:35 – Updated: 2026-05-12 15:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()
The function divides number of online CPUs by num_core_siblings, and later checks the divider by zero. This implies a possibility to get and divide-by-zero runtime error. Fix it by moving the check prior to division. This also helps to save one indentation level.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-39742"
],
"database_specific": {
"cwe_ids": [
"CWE-369"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-11T17:15:36Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()\n\nThe function divides number of online CPUs by num_core_siblings, and\nlater checks the divider by zero. This implies a possibility to get\nand divide-by-zero runtime error. Fix it by moving the check prior to\ndivision. This also helps to save one indentation level.",
"id": "GHSA-3xq3-w9mf-92jr",
"modified": "2026-05-12T15:31:06Z",
"published": "2025-09-11T18:35:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39742"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1a7cf828ed861de5be1aff99e10f114b363c19d3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/31d0599a23efdbfe579bfbd1eb8f8c942f13744d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4b4317b0d758ff92ba96f4e448a8992a6fe607bf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/89fdac333a17ed990b41565630ef4791782e02f5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b05e91afe948ed819bf87d7ba0fccf451ed79a6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9bba1a9994c523b44db64f63b564b4719ea2b7ef"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9d3211cb61a0773a2440d0a0698c1e6e7429f907"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ac53f377393cc85156afdc90b636e84e544a6f96"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.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"
}
]
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…