fkie_cve-2025-22128
Vulnerability from fkie_nvd
Published
2025-04-16 15:16
Modified
2025-06-27 11:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path If a shared IRQ is used by the driver due to platform limitation, then the IRQ affinity hint is set right after the allocation of IRQ vectors in ath12k_pci_msi_alloc(). This does no harm unless one of the functions requesting the IRQ fails and attempt to free the IRQ. This may end up with a warning from the IRQ core that is expecting the affinity hint to be cleared before freeing the IRQ: kernel/irq/manage.c: /* make sure affinity_hint is cleaned up */ if (WARN_ON_ONCE(desc->affinity_hint)) desc->affinity_hint = NULL; So to fix this issue, clear the IRQ affinity hint before calling ath12k_pci_free_irq() in the error path. The affinity will be cleared once again further down the error path due to code organization, but that does no harm.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35b33ba76765ce9e72949d957f3cf1feafd2955c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a69a594794fcad96d4cfce12aab6c5014a12b4c8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b43b1e2c52db77c872bd60d30cdcc72c47df70c7
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path\n\nIf a shared IRQ is used by the driver due to platform limitation, then the\nIRQ affinity hint is set right after the allocation of IRQ vectors in\nath12k_pci_msi_alloc(). This does no harm unless one of the functions\nrequesting the IRQ fails and attempt to free the IRQ.\n\nThis may end up with a warning from the IRQ core that is expecting the\naffinity hint to be cleared before freeing the IRQ:\n\nkernel/irq/manage.c:\n\n\t/* make sure affinity_hint is cleaned up */\n\tif (WARN_ON_ONCE(desc-\u003eaffinity_hint))\n\t\tdesc-\u003eaffinity_hint = NULL;\n\nSo to fix this issue, clear the IRQ affinity hint before calling\nath12k_pci_free_irq() in the error path. The affinity will be cleared once\nagain further down the error path due to code organization, but that does\nno harm."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: ath12k: Borrar la sugerencia de afinidad antes de llamar a ath12k_pci_free_irq() en la ruta de error Si el controlador usa una IRQ compartida debido a una limitaci\u00f3n de la plataforma, la sugerencia de afinidad de IRQ se establece justo despu\u00e9s de la asignaci\u00f3n de vectores de IRQ en ath12k_pci_msi_alloc(). Esto no causa da\u00f1o a menos que una de las funciones que solicita la IRQ falle e intente liberarla. Esto puede terminar con una advertencia del n\u00facleo de IRQ que espera que se borre la sugerencia de afinidad antes de liberar la IRQ: kernel/irq/manage.c: /* aseg\u00farese de que affinity_hint se limpie */ if (WARN_ON_ONCE(desc-\u0026gt;affinity_hint)) desc-\u0026gt;affinity_hint = NULL; Para solucionar este problema, borre la indicaci\u00f3n de afinidad de IRQ antes de llamar a ath12k_pci_free_irq() en la ruta de error. La afinidad se borrar\u00e1 m\u00e1s adelante en la ruta de error debido a la organizaci\u00f3n del c\u00f3digo, pero esto no perjudica."
    }
  ],
  "id": "CVE-2025-22128",
  "lastModified": "2025-06-27T11:15:24.440",
  "metrics": {},
  "published": "2025-04-16T15:16:06.897",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/35b33ba76765ce9e72949d957f3cf1feafd2955c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a69a594794fcad96d4cfce12aab6c5014a12b4c8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b43b1e2c52db77c872bd60d30cdcc72c47df70c7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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