fkie_cve-2025-38012
Vulnerability from fkie_nvd
Published
2025-06-18 10:15
Modified
2025-11-17 12:56
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0102989af4c334d1d98b2a0fd4d61a5152e39b72Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/255dd31bfc4a67a19b1fc2cd130a50284dadfe3aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/428dc9fc0873989d73918d4a9cc22745b7bbc799Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15


To clipboard 

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    {
      "nodes": [
        {
          "cpeMatch": [
            {
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              "matchCriteriaId": "F3FBF2D7-2AEE-456E-97E5-22E9926488AF",
              "versionEndExcluding": "6.12.30",
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  "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."
    }
  ],
  "id": "CVE-2025-38012",
  "lastModified": "2025-11-17T12:56:07.253",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T10:15:32.560",
  "references": [
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      "tags": [
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-908"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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