CVE-2023-54087 (GCVE-0-2023-54087)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2026-05-11 19:55
VLAI
Title
ubi: Fix possible null-ptr-deref in ubi_free_volume()
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < 5558bcf1c58720ca6e9d6198d921cb3aa337f038 (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < 45b2c5ca4d2edae70f19fdb086bd927840c4c309 (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < 234c53e57424992e657e6f4acc00d3df0983176f (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < fcbc795abe7897da4b5d2a6ab5010e36774b00c2 (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < 5ec4c8aca5a221756a9007deadfea92795319fee (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < 2ea7195b195009ecf0046e55361f393ba96d02db (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < 9eccdb0760cbcb4427b5303a83a3007de998af51 (git)
Affected: 801c135ce73d5df1caf3eca35b66a10824ae0707 , < c15859bfd326c10230f09cb48a17f8a35f190342 (git)
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Linux Linux Affected: 2.6.22
Unaffected: 0 , < 2.6.22 (semver)
Unaffected: 4.14.308 , ≤ 4.14.* (semver)
Unaffected: 4.19.276 , ≤ 4.19.* (semver)
Unaffected: 5.4.235 , ≤ 5.4.* (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.100 , ≤ 5.15.* (semver)
Unaffected: 6.1.18 , ≤ 6.1.* (semver)
Unaffected: 6.2.5 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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        }
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    "dateReserved": "2025-12-24T13:02:52.515Z",
    "dateUpdated": "2026-05-11T19:55:14.333Z",
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            "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."
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
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    "redhat_vex": {
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      "current_release_date": "2026-06-30T10:20:54+00:00",
      "cve": "CVE-2023-54087",
      "id": "CVE-2023-54087",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel (UBI): Denial of Service due to improper error handling",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54087.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-25T02:07:59Z",
      "cve": "CVE-2023-54087",
      "id": "CVE-2023-54087",
      "initial_release_date": "2025-12-25T00:55:56Z",
      "product_status:known_affected": "234",
      "product_status:known_not_affected": "187",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-54087",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-54087.json",
      "version": "13"
    }
  }
}



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