CVE-2025-38002 (GCVE-0-2025-38002)
Vulnerability from cvelistv5
Published
2025-06-06 13:43
Modified
2025-06-26 14:59
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bdb7d2ec2e31c46c45d1f32667dfa8216a72705e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d871198ee431d90f5308d53998c1ba1d5db5619a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://project-zero.issues.chromium.org/issues/417522668
Impacted products
Vendor Product Version
Linux Linux Version: 79cfe9e59c2a12c3b3faeeefe38d23f3d8030972
Version: 79cfe9e59c2a12c3b3faeeefe38d23f3d8030972
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   Linux Linux Version: 6.13
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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            {
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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                },
                {
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      "descriptions": [
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          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-26T14:59:26.666Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/bdb7d2ec2e31c46c45d1f32667dfa8216a72705e"
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        {
          "url": "https://git.kernel.org/stable/c/d871198ee431d90f5308d53998c1ba1d5db5619a"
        },
        {
          "url": "https://project-zero.issues.chromium.org/issues/417522668"
        }
      ],
      "title": "io_uring/fdinfo: grab ctx-\u003euring_lock around io_uring_show_fdinfo()",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38002",
    "datePublished": "2025-06-06T13:43:41.137Z",
    "dateReserved": "2025-04-16T04:51:23.977Z",
    "dateUpdated": "2025-06-26T14:59:26.666Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38002\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-06T14:15:22.313\",\"lastModified\":\"2025-06-26T15:15:22.843\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/fdinfo: captura ctx-\u0026gt;uring_lock en torno a io_uring_show_fdinfo(). No todo requiere bloqueo, raz\u00f3n por la cual existe la variable \u0027has_lock\u0027. Sin embargo, suficientes requieren bloqueo como para que sea un poco dif\u00edcil de manejar. Envuelva todo en un trylock `-\u0026gt;uring_lock` y simplemente devuelva sin salida si no logramos capturarlo. El trylock() existente ya tendr\u00e1 una utilidad/salida considerablemente reducida en caso de fallo. Esto soluciona un problema con la lectura de los campos SQE si el anillo se est\u00e1 redimensionando activamente al mismo tiempo.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/bdb7d2ec2e31c46c45d1f32667dfa8216a72705e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d871198ee431d90f5308d53998c1ba1d5db5619a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://project-zero.issues.chromium.org/issues/417522668\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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