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CVE-2024-51729

Estado: ModificadaAlta (7.8)—

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

mm: use aligned address in copy_user_gigantic_page()

In current kernel, hugetlb_wp() calls copy_user_large_folio() with the fault address. Where the fault address may be not aligned with the huge page size. Then, copy_user_large_folio() may call copy_user_gigantic_page() with the address, while copy_user_gigantic_page() requires the address to be huge page size aligned. So, this may cause memory corruption or information leak, addtional, use more obvious naming 'addr_hint' instead of 'addr' for copy_user_gigantic_page().

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.

AV:L/PR:L sin UI permite escalada local. Fallo en alineación de memoria (CWE-787 buffer overflow) en copy_user_gigantic_page() causa corrupción/fuga de datos en kernel hugetlb.

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

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageExecution PreventionEncrypt Sensitive InformationApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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  "published": "2025-01-11T13:15:24.650",
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          "lang": "en",
          "value": "CWE-787"
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  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: use aligned address in copy_user_gigantic_page()\n\nIn current kernel, hugetlb_wp() calls copy_user_large_folio() with the\nfault address.  Where the fault address may be not aligned with the huge\npage size.  Then, copy_user_large_folio() may call\ncopy_user_gigantic_page() with the address, while\ncopy_user_gigantic_page() requires the address to be huge page size\naligned.  So, this may cause memory corruption or information leak,\naddtional, use more obvious naming 'addr_hint' instead of 'addr' for\ncopy_user_gigantic_page()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: usar dirección alineada en copy_user_gigantic_page() En el kernel actual, hugetlb_wp() llama a copy_user_large_folio() con la dirección de error. Donde la dirección de error puede no estar alineada con el tamaño de página enorme. Entonces, copy_user_large_folio() puede llamar a copy_user_gigantic_page() con la dirección, mientras que copy_user_gigantic_page() requiere que la dirección esté alineada con el tamaño de página enorme. Por lo tanto, esto puede causar corrupción de memoria o fuga de información. Además, use un nombre más obvio 'addr_hint' en lugar de 'addr' para copy_user_gigantic_page()."
    }
  ],
  "lastModified": "2026-08-04T11:21:44.770",
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