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CVE-2025-38429

Estado: ModificadaMedia (5.5)—

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

bus: mhi: ep: Update read pointer only after buffer is written

Inside mhi_ep_ring_add_element, the read pointer (rd_offset) is updated before the buffer is written, potentially causing race conditions where the host sees an updated read pointer before the buffer is actually written. Updating rd_offset prematurely can lead to the host accessing an uninitialized or incomplete element, resulting in data corruption.

Invoke the buffer write before updating rd_offset to ensure the element is fully written before signaling its availability.

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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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: ep: Update read pointer only after buffer is written\n\nInside mhi_ep_ring_add_element, the read pointer (rd_offset) is updated\nbefore the buffer is written, potentially causing race conditions where\nthe host sees an updated read pointer before the buffer is actually\nwritten. Updating rd_offset prematurely can lead to the host accessing\nan uninitialized or incomplete element, resulting in data corruption.\n\nInvoke the buffer write before updating rd_offset to ensure the element\nis fully written before signaling its availability."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bus: mhi: ep: Actualizar el puntero de lectura solo después de escribir en el búfer. Dentro de mhi_ep_ring_add_element, el puntero de lectura (rd_offset) se actualiza antes de escribir en el búfer, lo que podría causar condiciones de ejecución donde el host ve un puntero de lectura actualizado antes de que se escriba en el búfer. Actualizar rd_offset prematuramente puede provocar que el host acceda a un elemento no inicializado o incompleto, lo que resulta en corrupción de datos. Invoque la escritura en el búfer antes de actualizar rd_offset para garantizar que el elemento esté completamente escrito antes de indicar su disponibilidad."
    }
  ],
  "lastModified": "2026-07-30T06:23:13.777",
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