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
Impacted products
Vendor Product Version
Linux Linux Version: 79cfe9e59c2a12c3b3faeeefe38d23f3d8030972
Version: 79cfe9e59c2a12c3b3faeeefe38d23f3d8030972
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  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/fdinfo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "vendor": "Linux",
          "versions": [
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              "version": "6.13"
            },
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              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.8",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.8",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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      ],
      "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."
        }
      ],
      "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"
        },
        {
          "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()",
      "x_generator": {
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  "cveMetadata": {
    "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",
  "dataVersion": "5.1",
  "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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