FKIE_CVE-2025-37946

Vulnerability from fkie_nvd - Published: 2025-05-20 16:15 - Updated: 2025-11-17 12:57
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs With commit bcb5d6c76903 ("s390/pci: introduce lock to synchronize state of zpci_dev's") the code to ignore power off of a PF that has child VFs was changed from a direct return to a goto to the unlock and pci_dev_put() section. The change however left the existing pci_dev_put() untouched resulting in a doubple put. This can subsequently cause a use after free if the struct pci_dev is released in an unexpected state. Fix this by removing the extra pci_dev_put().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/05a2538f2b48500cf4e8a0a0ce76623cc5bafcf1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/957529baef142d95e0d1b1bea786675bd47dbe53Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c488f8b53e156d6dcc0514ef0afa3a33376b8f9ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs\n\nWith commit bcb5d6c76903 (\"s390/pci: introduce lock to synchronize state\nof zpci_dev\u0027s\") the code to ignore power off of a PF that has child VFs\nwas changed from a direct return to a goto to the unlock and\npci_dev_put() section. The change however left the existing pci_dev_put()\nuntouched resulting in a doubple put. This can subsequently cause a use\nafter free if the struct pci_dev is released in an unexpected state.\nFix this by removing the extra pci_dev_put()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/pci: Se ha corregido un error pci_dev_put() duplicado en disabled_slot() cuando un PF tiene VFs secundarios. Con el commit bcb5d6c76903 (\"s390/pci: introducir un bloqueo para sincronizar el estado de zpci_dev\"), el c\u00f3digo para ignorar el apagado de un PF con VFs secundarios se cambi\u00f3 de un retorno directo a un goto a la secci\u00f3n de desbloqueo y pci_dev_put(). Sin embargo, el cambio dej\u00f3 intacto el pci_dev_put() existente, lo que result\u00f3 en un doble put. Esto puede provocar un use after free si la estructura pci_dev se libera en un estado inesperado. Se soluciona eliminando el pci_dev_put() adicional."
    }
  ],
  "id": "CVE-2025-37946",
  "lastModified": "2025-11-17T12:57:23.847",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2025-05-20T16:15:32.577",
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      "tags": [
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      "source": "nvd@nist.gov",
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}


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