GHSA-7R26-6H4Q-5X56

Vulnerability from github – Published: 2025-02-27 03:34 – Updated: 2026-10-15 03:34
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

ipv4: use RCU protection in __ip_rt_update_pmtu()

__ip_rt_update_pmtu() must use RCU protection to make sure the net structure it reads does not disappear.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-21766"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T03:15:17Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: use RCU protection in __ip_rt_update_pmtu()\n\n__ip_rt_update_pmtu() must use RCU protection to make\nsure the net structure it reads does not disappear.",
  "id": "GHSA-7r26-6h4q-5x56",
  "modified": "2026-10-15T03:34:36Z",
  "published": "2025-02-27T03:34:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21766"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.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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