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CVE-2025-38504

Estado: AnalizadaMedia (5.5)—

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

io_uring/zcrx: fix pp destruction warnings

With multiple page pools and in some other cases we can have allocated niovs on page pool destruction. Remove a misplaced warning checking that all niovs are returned to zcrx on io_pp_zc_destroy(). It was reported before but apparently got lost.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-38504",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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      "affectedData": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "lessThan": "ad9f1b5bed082b9c910e2a24bae0286a70846909",
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            {
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          "programFiles": [
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          "defaultStatus": "unaffected"
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        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.15"
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              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
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            {
              "status": "unaffected",
              "version": "6.15.7",
              "versionType": "semver",
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            },
            {
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
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          ],
          "programFiles": [
            "io_uring/zcrx.c"
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          "defaultStatus": "affected"
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  ],
  "published": "2025-08-16T11:15:43.293",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/203817de269539c062724d97dfa5af3cdf77a3ec",
      "tags": [
        "Patch"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ad9f1b5bed082b9c910e2a24bae0286a70846909",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zcrx: fix pp destruction warnings\n\nWith multiple page pools and in some other cases we can have allocated\nniovs on page pool destruction. Remove a misplaced warning checking that\nall niovs are returned to zcrx on io_pp_zc_destroy(). It was reported\nbefore but apparently got lost."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/zcrx: corrección de advertencias de destrucción de pp. Con varios grupos de páginas y en otros casos, podemos asignar niovs al destruir el grupo de páginas. Se ha eliminado una advertencia incorrecta que verificaba que todos los niovs se devolvieran a zcrx en io_pp_zc_destroy(). Se informó anteriormente, pero aparentemente se perdió."
    }
  ],
  "lastModified": "2026-06-17T09:17:00.270",
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    {
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          "negate": false,
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