{
  "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-2025-39902",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39902",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T07:42:49.415Z",
    "updatedAt": "2026-10-15T22:02:32.999Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "mm/slub: avoid accessing metadata when pointer is invalid in object_err()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\n\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\n\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\n\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "872f2c34ff232af1e65ad2df86d61163c8ffad42"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f66012909e7bf383fcdc5850709ed5716073fdc4"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e287256904ee796c9477e3ec92b07f236481ef3"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f0797f17927b5cad0fb7eced422f9a7c30a3191"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0ef7058b4dc6fcef622ac23b45225db57f17b83f"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dda6ec365ab04067adae40ef17015db447e90736"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3baa1da473e6e50281324ff1d332d1a07a3bb02e"
            },
            {
              "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4efccec8d06ceb10a7d34d7b1c449c569d53770"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.22",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.22"
            },
            {
              "version": "5.4.299",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.243",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.192",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.151",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.105",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.16.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}