{
  "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-2025-40228",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40228",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-04T15:31:19.668Z",
    "updatedAt": "2026-05-11T21:45:16.363Z",
    "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/damon/sysfs: catch commit test ctx alloc failure",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: catch commit test ctx alloc failure\n\nPatch series \"mm/damon/sysfs: fix commit test damon_ctx [de]allocation\".\n\nDAMON sysfs interface dynamically allocates and uses a damon_ctx object\nfor testing if given inputs for online DAMON parameters update is valid.\nThe object is being used without an allocation failure check, and leaked\nwhen the test succeeds.  Fix the two bugs.\n\n\nThis patch (of 2):\n\nThe damon_ctx for testing online DAMON parameters commit inputs is used\nwithout its allocation failure check.  This could result in an invalid\nmemory access.  Fix it by directly returning an error when the allocation\nfailed.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4c9ea539ad59ec60676930dacee02b7adde2e0c0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc"
            },
            {
              "version": "4c9ea539ad59ec60676930dacee02b7adde2e0c0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.15"
            },
            {
              "version": "6.17.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}