ghsa-p6ff-97p8-xxmr
Vulnerability from github
Published
2025-06-06 15:30
Modified
2025-06-26 18:31
Details

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

io_uring/fdinfo: grab ctx->uring_lock around io_uring_show_fdinfo()

Not everything requires locking in there, which is why the 'has_lock' variable exists. But enough does that it's a bit unwieldy to manage. Wrap the whole thing in a ->uring_lock trylock, and just return with no output if we fail to grab it. The existing trylock() will already have greatly diminished utility/output for the failure case.

This fixes an issue with reading the SQE fields, if the ring is being actively resized at the same time.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38002"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-06T14:15:22Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/fdinfo: grab ctx-\u003euring_lock around io_uring_show_fdinfo()\n\nNot everything requires locking in there, which is why the \u0027has_lock\u0027\nvariable exists. But enough does that it\u0027s a bit unwieldy to manage.\nWrap the whole thing in a -\u003euring_lock trylock, and just return\nwith no output if we fail to grab it. The existing trylock() will\nalready have greatly diminished utility/output for the failure case.\n\nThis fixes an issue with reading the SQE fields, if the ring is being\nactively resized at the same time.",
  "id": "GHSA-p6ff-97p8-xxmr",
  "modified": "2025-06-26T18:31:18Z",
  "published": "2025-06-06T15:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38002"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bdb7d2ec2e31c46c45d1f32667dfa8216a72705e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d871198ee431d90f5308d53998c1ba1d5db5619a"
    },
    {
      "type": "WEB",
      "url": "https://project-zero.issues.chromium.org/issues/417522668"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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