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CVE-2025-71231

Estado: AnalizadaAlta (7.1)—

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

crypto: iaa - Fix out-of-bounds index in find_empty_iaa_compression_mode

The local variable 'i' is initialized with -EINVAL, but the for loop immediately overwrites it and -EINVAL is never returned.

If no empty compression mode can be found, the function would return the out-of-bounds index IAA_COMP_MODES_MAX, which would cause an invalid array access in add_iaa_compression_mode().

Fix both issues by returning either a valid index or -EINVAL.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de acceso a memoria fuera de rango (CWE-125) en kernel de Linux que requiere privilegios locales (PR:L) sin interacción del usuario. Permite escalada de privilegios y posible ejecución arbitraria de código con permisos elevados.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-71231",
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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          "programFiles": [
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          ],
          "defaultStatus": "affected"
        }
      ]
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  ],
  "published": "2026-02-18T16:22:29.863",
  "references": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: iaa - Fix out-of-bounds index in find_empty_iaa_compression_mode\n\nThe local variable 'i' is initialized with -EINVAL, but the for loop\nimmediately overwrites it and -EINVAL is never returned.\n\nIf no empty compression mode can be found, the function would return the\nout-of-bounds index IAA_COMP_MODES_MAX, which would cause an invalid\narray access in add_iaa_compression_mode().\n\nFix both issues by returning either a valid index or -EINVAL."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\ncrypto: iaa - Corrección de índice fuera de límites en find_empty_iaa_compression_mode\n\nLa variable local 'i' se inicializa con -EINVAL, pero el bucle for la sobrescribe inmediatamente y -EINVAL nunca se devuelve.\n\nSi no se encuentra ningún modo de compresión vacío, la función devolvería el índice fuera de límites IAA_COMP_MODES_MAX, lo que causaría un acceso a array inválido en add_iaa_compression_mode().\n\nSe corrigen ambos problemas devolviendo un índice válido o -EINVAL."
    }
  ],
  "lastModified": "2026-06-17T10:03:55.003",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "6.12.72",
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}