ghsa-w6f6-h6gc-qpjj
Vulnerability from github
Published
2025-10-09 15:31
Modified
2025-10-09 15:31
Details

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

io_uring: fix incorrect io_kiocb reference in io_link_skb

In io_link_skb function, there is a bug where prev_notif is incorrectly assigned using 'nd' instead of 'prev_nd'. This causes the context validation check to compare the current notification with itself instead of comparing it with the previous notification.

Fix by using the correct prev_nd parameter when obtaining prev_notif.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39963"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-09T13:15:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix incorrect io_kiocb reference in io_link_skb\n\nIn io_link_skb function, there is a bug where prev_notif is incorrectly\nassigned using \u0027nd\u0027 instead of \u0027prev_nd\u0027. This causes the context\nvalidation check to compare the current notification with itself instead\nof comparing it with the previous notification.\n\nFix by using the correct prev_nd parameter when obtaining prev_notif.",
  "id": "GHSA-w6f6-h6gc-qpjj",
  "modified": "2025-10-09T15:31:03Z",
  "published": "2025-10-09T15:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39963"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c139a47eff8de24e3350dadb4c9d5e3426db826"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50a98ce1ea694f1ff8e87bc2f8f84096d1736f6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a89c34babc2e5834aa0905278f26f4dbe4b26b76"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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