CVE-2025-38516

Estado: AnalizadaMedia (5.5)—

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

pinctrl: qcom: msm: mark certain pins as invalid for interrupts

On some platforms, the UFS-reset pin has no interrupt logic in TLMM but is nevertheless registered as a GPIO in the kernel. This enables the user-space to trigger a BUG() in the pinctrl-msm driver by running, for example: `gpiomon -c 0 113` on RB2.

The exact culprit is requesting pins whose intr_detection_width setting is not 1 or 2 for interrupts. This hits a BUG() in msm_gpio_irq_set_type(). Potentially crashing the kernel due to an invalid request from user-space is not optimal, so let's go through the pins and mark those that would fail the check as invalid for the irq chip as we should not even register them as available irqs.

Leer descripción completaMostrar menos

This function can be extended if we determine that there are more corner-cases like this.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.16%
Percentil entre todas las CVEs puntuadas: 5
Fecha de la puntuación: 6/10/2026

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 Linux Linux — Linux Kernel

CWE

CWE-476

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: qcom: msm: mark certain pins as invalid for interrupts\n\nOn some platforms, the UFS-reset pin has no interrupt logic in TLMM but\nis nevertheless registered as a GPIO in the kernel. This enables the\nuser-space to trigger a BUG() in the pinctrl-msm driver by running, for\nexample: `gpiomon -c 0 113` on RB2.\n\nThe exact culprit is requesting pins whose intr_detection_width setting\nis not 1 or 2 for interrupts. This hits a BUG() in\nmsm_gpio_irq_set_type(). Potentially crashing the kernel due to an\ninvalid request from user-space is not optimal, so let's go through the\npins and mark those that would fail the check as invalid for the irq chip\nas we should not even register them as available irqs.\n\nThis function can be extended if we determine that there are more\ncorner-cases like this."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pinctrl: qcom: msm: marcar ciertos pines como inválidos para interrupciones En algunas plataformas, el pin UFS-reset no tiene lógica de interrupción en TLMM pero sin embargo está registrado como un GPIO en el kernel. Esto permite que el espacio de usuario active un BUG() en el controlador pinctrl-msm ejecutando, por ejemplo: `gpiomon -c 0 113` en RB2. El culpable exacto es solicitar pines cuyo ajuste intr_detection_width no es 1 o 2 para interrupciones. Esto alcanza un BUG() en msm_gpio_irq_set_type(). Potencialmente, bloquear el kernel debido a una solicitud inválida del espacio de usuario no es óptimo, así que revisemos los pines y marquemos aquellos que fallarían la verificación como inválidos para el chip irq ya que ni siquiera deberíamos registrarlos como irq disponibles. Esta función se puede extender si determinamos que hay más casos especiales como este."
    }
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