fkie_cve-2023-54087
Vulnerability from fkie_nvd
Published
2025-12-24 13:16
Modified
2025-12-24 13:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ubi: Fix possible null-ptr-deref in ubi_free_volume() It willl cause null-ptr-deref in the following case: uif_init() ubi_add_volume() cdev_add() -> if it fails, call kill_volumes() device_register() kill_volumes() -> if ubi_add_volume() fails call this function ubi_free_volume() cdev_del() device_unregister() -> trying to delete a not added device, it causes null-ptr-deref So in ubi_free_volume(), it delete devices whether they are added or not, it will causes null-ptr-deref. Handle the error case whlie calling ubi_add_volume() to fix this problem. If add volume fails, set the corresponding vol to null, so it can not be accessed in kill_volumes() and release the resource in ubi_add_volume() error path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/234c53e57424992e657e6f4acc00d3df0983176f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ea7195b195009ecf0046e55361f393ba96d02db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45b2c5ca4d2edae70f19fdb086bd927840c4c309
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5558bcf1c58720ca6e9d6198d921cb3aa337f038
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ec4c8aca5a221756a9007deadfea92795319fee
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9eccdb0760cbcb4427b5303a83a3007de998af51
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c15859bfd326c10230f09cb48a17f8a35f190342
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcbc795abe7897da4b5d2a6ab5010e36774b00c2
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\nubi: Fix possible null-ptr-deref in ubi_free_volume()\n\nIt willl cause null-ptr-deref in the following case:\n\nuif_init()\n  ubi_add_volume()\n    cdev_add() -\u003e if it fails, call kill_volumes()\n    device_register()\n\nkill_volumes() -\u003e if ubi_add_volume() fails call this function\n  ubi_free_volume()\n    cdev_del()\n    device_unregister() -\u003e trying to delete a not added device,\n\t\t\t   it causes null-ptr-deref\n\nSo in ubi_free_volume(), it delete devices whether they are added\nor not, it will causes null-ptr-deref.\n\nHandle the error case whlie calling ubi_add_volume() to fix this\nproblem. If add volume fails, set the corresponding vol to null,\nso it can not be accessed in kill_volumes() and release the\nresource in ubi_add_volume() error path."
    }
  ],
  "id": "CVE-2023-54087",
  "lastModified": "2025-12-24T13:16:10.557",
  "metrics": {},
  "published": "2025-12-24T13:16:10.557",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/234c53e57424992e657e6f4acc00d3df0983176f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2ea7195b195009ecf0046e55361f393ba96d02db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/45b2c5ca4d2edae70f19fdb086bd927840c4c309"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5558bcf1c58720ca6e9d6198d921cb3aa337f038"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5ec4c8aca5a221756a9007deadfea92795319fee"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9eccdb0760cbcb4427b5303a83a3007de998af51"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c15859bfd326c10230f09cb48a17f8a35f190342"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fcbc795abe7897da4b5d2a6ab5010e36774b00c2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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