GHSA-PCR3-GRPM-HH36

Vulnerability from github – Published: 2026-04-25 09:30 – Updated: 2026-06-01 18:31
VLAI
Details

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

af_unix: read UNIX_DIAG_VFS data under unix_state_lock

Exact UNIX diag lookups hold a reference to the socket, but not to u->path. Meanwhile, unix_release_sock() clears u->path under unix_state_lock() and drops the path reference after unlocking.

Read the inode and device numbers for UNIX_DIAG_VFS while holding unix_state_lock(), then emit the netlink attribute after dropping the lock.

This keeps the VFS data stable while the reply is being built.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-31673"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-25T09:16:00Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: read UNIX_DIAG_VFS data under unix_state_lock\n\nExact UNIX diag lookups hold a reference to the socket, but not to\nu-\u003epath. Meanwhile, unix_release_sock() clears u-\u003epath under\nunix_state_lock() and drops the path reference after unlocking.\n\nRead the inode and device numbers for UNIX_DIAG_VFS while holding\nunix_state_lock(), then emit the netlink attribute after dropping the\nlock.\n\nThis keeps the VFS data stable while the reply is being built.",
  "id": "GHSA-pcr3-grpm-hh36",
  "modified": "2026-06-01T18:31:28Z",
  "published": "2026-04-25T09:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31673"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c739f3785f84af695952c2bac8be2f45082c9b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39897df386376912d561d4946499379effa1e7ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f6a8f10182c3a9d22e8eb183957ae7ade9e4bf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/900a4e0910e98b8caef117d5df00471fa438dcf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9232421a77a649c9376c99fdfc8cb7f79cad34c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bdf206e740bf2919d818f132c8c9cc7ed91d11c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3ec44ab4526bbc4b6c9fc845af86488244f4c9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7339db13b9ddb63417b12da55fd6191e59f7442"
    }
  ],
  "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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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.

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