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CVE-2025-37908

Estado: ModificadaAlta (7.8)—

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

mm, slab: clean up slab->obj_exts always

When memory allocation profiling is disabled at runtime or due to an error, shutdown_mem_profiling() is called: slab->obj_exts which previously allocated remains. It won't be cleared by unaccount_slab() because of mem_alloc_profiling_enabled() not true. It's incorrect, slab->obj_exts should always be cleaned up in unaccount_slab() to avoid following error:

[...]BUG: Bad page state in process... .. [...]page dumped because: page still charged to cgroup

[andriy.shevchenko@linux.intel.com: fold need_slab_obj_ext() into its only user]

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 local sin interacción (AV:L, PR:L, UI:N) que permite escalada de privilegios en el kernel de Linux; causa corrupción de memoria de slab y crashes de sistema (DoS)

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 StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "published": "2025-05-20T16:15:27.280",
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      "description": [
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          "lang": "en",
          "value": "CWE-459"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm, slab: clean up slab->obj_exts always\n\nWhen memory allocation profiling is disabled at runtime or due to an\nerror, shutdown_mem_profiling() is called: slab->obj_exts which\npreviously allocated remains.\nIt won't be cleared by unaccount_slab() because of\nmem_alloc_profiling_enabled() not true. It's incorrect, slab->obj_exts\nshould always be cleaned up in unaccount_slab() to avoid following error:\n\n[...]BUG: Bad page state in process...\n..\n[...]page dumped because: page still charged to cgroup\n\n[andriy.shevchenko@linux.intel.com: fold need_slab_obj_ext() into its only user]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm, slab: limpiar slab->obj_exts siempre. Cuando el perfilado de asignación de memoria se deshabilita en tiempo de ejecución o debido a un error, se llama a shutdown_mem_profiling(): slab->obj_exts, previamente asignado, permanece. No se borrará con unaccount_slab() debido a que mem_alloc_profiling_enabled() no es verdadero. Es incorrecto; slab->obj_exts siempre debe limpiarse en unaccount_slab() para evitar el siguiente error: [...] ERROR: Estado de página incorrecto en proceso... [...] página volcada porque: la página aún se carga al cgroup [andriy.shevchenko@linux.intel.com: integrar need_slab_obj_ext() en su único usuario]"
    }
  ],
  "lastModified": "2026-07-30T06:22:31.797",
  "configurations": [
    {
      "nodes": [
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