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CVE-2023-52619

Estado: AnalizadaMedia (5.5)—

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pstore/ram: soluciona el fallo al establecer el número de CPU en un número impar. Cuando el número de núcleos de CPU se ajusta a 7 u otros números impares, el tamaño de la zona se convertirá en un número impar. La dirección de la zona se convertirá en: dirección de zona0 = BASE dirección de zona1 = BASE + tamaño_zona dirección de zona2 = BASE + tamaño_zona*2 ... La dirección de zona1/3/5/7 se asignará a va no alineada . Eventualmente se producirán fallas al acceder a estos va. Entonces, use ALIGN_DOWN() para asegurarse de que el tamaño de la zona sea uniforme para evitar este error.

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 (2)

Debian — Debian LinuxLinux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npstore/ram: Fix crash when setting number of cpus to an odd number\n\nWhen the number of cpu cores is adjusted to 7 or other odd numbers,\nthe zone size will become an odd number.\nThe address of the zone will become:\n    addr of zone0 = BASE\n    addr of zone1 = BASE + zone_size\n    addr of zone2 = BASE + zone_size*2\n    ...\nThe address of zone1/3/5/7 will be mapped to non-alignment va.\nEventually crashes will occur when accessing these va.\n\nSo, use ALIGN_DOWN() to make sure the zone size is even\nto avoid this bug."
    },
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pstore/ram: soluciona el fallo al establecer el número de CPU en un número impar. Cuando el número de núcleos de CPU se ajusta a 7 u otros números impares, el tamaño de la zona se convertirá en un número impar. La dirección de la zona se convertirá en: dirección de zona0 = BASE dirección de zona1 = BASE + tamaño_zona dirección de zona2 = BASE + tamaño_zona*2 ... La dirección de zona1/3/5/7 se asignará a va no alineada . Eventualmente se producirán fallas al acceder a estos va. Entonces, use ALIGN_DOWN() para asegurarse de que el tamaño de la zona sea uniforme para evitar este error."
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  "lastModified": "2026-06-17T06:43:10.787",
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