{
  "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-2021-46966",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46966",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-27T18:47:03.631Z",
    "updatedAt": "2026-05-23T15:18:48.670Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "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": "ACPI: custom_method: fix potential use-after-free issue",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: custom_method: fix potential use-after-free issue\n\nIn cm_write(), buf is always freed when reaching the end of the\nfunction.  If the requested count is less than table.length, the\nallocated buffer will be freed but subsequent calls to cm_write() will\nstill try to access it.\n\nRemove the unconditional kfree(buf) at the end of the function and\nset the buf to NULL in the -EINVAL error path to match the rest of\nfunction.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4bda2b79a9d04c8ba31681c66e95877dbb433416",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1d53ca5d131074c925ce38361fb0376d3bf7e394"
            },
            {
              "version": "5c12dadcbef8cd55ef1f5dac799bfcbb7ea7db1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8b04d57f30caf76649d0567551589af9a66ca9be"
            },
            {
              "version": "35b88a10535edcf62d3e6b7893a8cd506ff98a24",
              "status": "affected",
              "versionType": "git",
              "lessThan": "90575d1d9311b753cf1718f4ce9061ddda7dfd23"
            },
            {
              "version": "e4467fb6ef547aa352dc03397f9474ec84eced5b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a5b26a2e362f572d87e9fd35435680e557052a17"
            },
            {
              "version": "03d1571d9513369c17e6848476763ebbd10ec2cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "72814a94c38a33239793f7622cec6ace1e540c4b"
            },
            {
              "version": "03d1571d9513369c17e6848476763ebbd10ec2cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "62dc2440ebb552aa0d7f635e1697e077d9d21203"
            },
            {
              "version": "03d1571d9513369c17e6848476763ebbd10ec2cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f16737caf41fc06cfe6e49048becb09657074d4b"
            },
            {
              "version": "03d1571d9513369c17e6848476763ebbd10ec2cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b7a5baaae212a686ceb812c32fceed79c03c0234"
            },
            {
              "version": "03d1571d9513369c17e6848476763ebbd10ec2cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e483bb9a991bdae29a0caa4b3a6d002c968f94aa"
            },
            {
              "version": "70424999fbf1f160ade111cb9baab51776e0f9c2",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "06cd4a06eb596a888239fb8ceb6ea15677cab396",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.4.195",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.4.269"
            },
            {
              "version": "4.9.195",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.9.269"
            },
            {
              "version": "4.14.147",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.14.233"
            },
            {
              "version": "4.19.77",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.19.191"
            },
            {
              "version": "5.2.19",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.3"
            },
            {
              "version": "5.3.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.4"
            },
            {
              "version": "4.4.269",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.4.*"
            },
            {
              "version": "4.9.269",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.233",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.191",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.118",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.36",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.20",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}