CVE-2025-38012 (GCVE-0-2025-38012)
Vulnerability from cvelistv5
Published
2025-06-18 09:28
Modified
2025-06-18 09:28
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator BPF programs may call next() and destroy() on BPF iterators even after new() returns an error value (e.g. bpf_for_each() macro ignores error returns from new()). bpf_iter_scx_dsq_new() could leave the iterator in an uninitialized state after an error return causing bpf_iter_scx_dsq_next() to dereference garbage data. Make bpf_iter_scx_dsq_new() always clear $kit->dsq so that next() and destroy() become noops.
References
Impacted products
Vendor Product Version
Linux Linux Version: 650ba21b131ed1f8ee57826b2c6295a3be221132
Version: 650ba21b131ed1f8ee57826b2c6295a3be221132
Version: 650ba21b131ed1f8ee57826b2c6295a3be221132
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/sched/ext.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "0102989af4c334d1d98b2a0fd4d61a5152e39b72",
              "status": "affected",
              "version": "650ba21b131ed1f8ee57826b2c6295a3be221132",
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              "version": "650ba21b131ed1f8ee57826b2c6295a3be221132",
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            {
              "lessThan": "428dc9fc0873989d73918d4a9cc22745b7bbc799",
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              "versionType": "git"
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/sched/ext.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.30",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.8",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: bpf_iter_scx_dsq_new() should always initialize iterator\n\nBPF programs may call next() and destroy() on BPF iterators even after new()\nreturns an error value (e.g. bpf_for_each() macro ignores error returns from\nnew()). bpf_iter_scx_dsq_new() could leave the iterator in an uninitialized\nstate after an error return causing bpf_iter_scx_dsq_next() to dereference\ngarbage data. Make bpf_iter_scx_dsq_new() always clear $kit-\u003edsq so that\nnext() and destroy() become noops."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T09:28:22.057Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0102989af4c334d1d98b2a0fd4d61a5152e39b72"
        },
        {
          "url": "https://git.kernel.org/stable/c/255dd31bfc4a67a19b1fc2cd130a50284dadfe3a"
        },
        {
          "url": "https://git.kernel.org/stable/c/428dc9fc0873989d73918d4a9cc22745b7bbc799"
        }
      ],
      "title": "sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38012",
    "datePublished": "2025-06-18T09:28:22.057Z",
    "dateReserved": "2025-04-16T04:51:23.977Z",
    "dateUpdated": "2025-06-18T09:28:22.057Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38012\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T10:15:32.560\",\"lastModified\":\"2025-06-18T13:46:52.973\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsched_ext: bpf_iter_scx_dsq_new() should always initialize iterator\\n\\nBPF programs may call next() and destroy() on BPF iterators even after new()\\nreturns an error value (e.g. bpf_for_each() macro ignores error returns from\\nnew()). bpf_iter_scx_dsq_new() could leave the iterator in an uninitialized\\nstate after an error return causing bpf_iter_scx_dsq_next() to dereference\\ngarbage data. Make bpf_iter_scx_dsq_new() always clear $kit-\u003edsq so that\\nnext() and destroy() become noops.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched_ext: bpf_iter_scx_dsq_new() siempre debe inicializar el iterador. Los programas BPF pueden llamar a next() y destroy() en iteradores BPF incluso despu\u00e9s de que new() devuelva un valor de error (p. ej., la macro bpf_for_each() ignora los errores devueltos por new()). bpf_iter_scx_dsq_new() podr\u00eda dejar el iterador sin inicializar despu\u00e9s de un error, lo que provoca que bpf_iter_scx_dsq_next() desreferencia datos innecesarios. Aseg\u00farese de que bpf_iter_scx_dsq_new() siempre borre $kit-\u0026gt;dsq para que next() y destroy() se conviertan en noops.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0102989af4c334d1d98b2a0fd4d61a5152e39b72\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/255dd31bfc4a67a19b1fc2cd130a50284dadfe3a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/428dc9fc0873989d73918d4a9cc22745b7bbc799\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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