CVE-2026-64241

Estado: AnalizadaMedia (5.5)—

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

gpio: rockchip: teardown bugs and resource leaks

Address several teardown issues and resource leaks in the driver's remove path and error handling:

[Bartosz: don't emit an error message on devres allocation failure]

Detalles técnicos trazas, registros y código del informe original

1. Debounce clock reference leak: The debounce clock (bank->db_clk) is
   obtained using of_clk_get() which increments the clock's reference
   count, but clk_put() is never called. Register a devm action to
   cleanly release it on unbind. Note that of_clk_get(..., 1) remains
   necessary over devm_clk_get() because the DT binding does not define
   clock-names, precluding name-based lookup.

2. Unregistered chained IRQ handler: The chained IRQ handler is not
   disconnected in remove(). If a stray interrupt fires after the driver
   is removed, the kernel attempts to execute a stale handler, leading
   to a panic. Fix this by clearing the handler in remove().

3. IRQ domain leak: The linear IRQ domain and its generic chips are
   allocated manually during probe but never removed. Remove the IRQ
   domain during driver teardown to free the associated generic chips
   and mappings.

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 (1)

Linux — Linux Kernel

CWE

CWE-401

Referencias

JSON original (NVD)

Mostrar

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  "published": "2026-07-24T16:16:53.443",
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: rockchip: teardown bugs and resource leaks\n\nAddress several teardown issues and resource leaks in the driver's remove\npath and error handling:\n\n1. Debounce clock reference leak: The debounce clock (bank->db_clk) is\n   obtained using of_clk_get() which increments the clock's reference\n   count, but clk_put() is never called. Register a devm action to\n   cleanly release it on unbind. Note that of_clk_get(..., 1) remains\n   necessary over devm_clk_get() because the DT binding does not define\n   clock-names, precluding name-based lookup.\n\n2. Unregistered chained IRQ handler: The chained IRQ handler is not\n   disconnected in remove(). If a stray interrupt fires after the driver\n   is removed, the kernel attempts to execute a stale handler, leading\n   to a panic. Fix this by clearing the handler in remove().\n\n3. IRQ domain leak: The linear IRQ domain and its generic chips are\n   allocated manually during probe but never removed. Remove the IRQ\n   domain during driver teardown to free the associated generic chips\n   and mappings.\n\n[Bartosz: don't emit an error message on devres allocation failure]"
    }
  ],
  "lastModified": "2026-08-13T17:21:38.697",
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