{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-54087",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54087",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-24T13:06:17.555Z",
    "updatedAt": "2026-05-11T19:55:14.333Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "ubi: Fix possible null-ptr-deref in ubi_free_volume()",
      "summary": "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() -> if it fails, call kill_volumes()\n    device_register()\n\nkill_volumes() -> if ubi_add_volume() fails call this function\n  ubi_free_volume()\n    cdev_del()\n    device_unregister() -> 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.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5558bcf1c58720ca6e9d6198d921cb3aa337f038"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "45b2c5ca4d2edae70f19fdb086bd927840c4c309"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "234c53e57424992e657e6f4acc00d3df0983176f"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fcbc795abe7897da4b5d2a6ab5010e36774b00c2"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5ec4c8aca5a221756a9007deadfea92795319fee"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ea7195b195009ecf0046e55361f393ba96d02db"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9eccdb0760cbcb4427b5303a83a3007de998af51"
            },
            {
              "version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c15859bfd326c10230f09cb48a17f8a35f190342"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.22",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.22"
            },
            {
              "version": "4.14.308",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.276",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.235",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.173",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.100",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.18",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}