{
  "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-2023-53480",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53480",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T11:42:48.919Z",
    "updatedAt": "2026-05-11T19:45:48.153Z",
    "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": "kobject: Add sanity check for kset->kobj.ktype in kset_register()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nkobject: Add sanity check for kset->kobj.ktype in kset_register()\n\nWhen I register a kset in the following way:\n\tstatic struct kset my_kset;\n\tkobject_set_name(&my_kset.kobj, \"my_kset\");\n        ret = kset_register(&my_kset);\n\nA null pointer dereference exception is occurred:\n[ 4453.568337] Unable to handle kernel NULL pointer dereference at \\\nvirtual address 0000000000000028\n... ...\n[ 4453.810361] Call trace:\n[ 4453.813062]  kobject_get_ownership+0xc/0x34\n[ 4453.817493]  kobject_add_internal+0x98/0x274\n[ 4453.822005]  kset_register+0x5c/0xb4\n[ 4453.825820]  my_kobj_init+0x44/0x1000 [my_kset]\n... ...\n\nBecause I didn't initialize my_kset.kobj.ktype.\n\nAccording to the description in Documentation/core-api/kobject.rst:\n - A ktype is the type of object that embeds a kobject.  Every structure\n   that embeds a kobject needs a corresponding ktype.\n\nSo add sanity check to make sure kset->kobj.ktype is not NULL.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "039ec9db2d30032eafa365f5f89b30eca5322b05"
            },
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "964e025ceefdf75da46b0133d0c2790de451aeec"
            },
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5df5829158513134ddcaf2184d9286eda7b0bb18"
            },
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef"
            },
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "48aebbe801e78a8932404c122ed0e880ccedc220"
            },
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a772881bc059c596d8ca587cbd2a233edce3d3b"
            },
            {
              "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d0fe8c52bb3029d83e323c961221156ab98680b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.19"
            },
            {
              "version": "4.19.295",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.257",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.197",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.133",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.55",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.5.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}