GHSA-QJ2F-X8M5-RRR3
Vulnerability from github – Published: 2025-03-12 12:30 – Updated: 2026-10-15 03:34
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
io_uring: prevent opcode speculation
sqe->opcode is used for different tables, make sure we santitise it against speculations.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-21863"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-12T10:15:19Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: prevent opcode speculation\n\nsqe-\u003eopcode is used for different tables, make sure we santitise it\nagainst speculations.",
"id": "GHSA-qj2f-x8m5-rrr3",
"modified": "2026-10-15T03:34:42Z",
"published": "2025-03-12T12:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21863"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/18eae8420081ef8e043ad455937bfb470ef08607"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1e988c3fe1264708f4f92109203ac5b1d65de50b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/506b9b5e8c2d2a411ea8fe361333f5081c56d23a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/87e9eef43c758da267f6332678058a79764c7eba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b9826e3b26ec031e9063f64a7c735449c43955e4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d261ead565a080e3411b0dd04e6d58a52471cac8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fdbfd52bd8b85ed6783365ff54c82ab7067bd61b"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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Sightings
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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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.
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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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