{
  "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-2026-43333",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43333",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-08T13:31:20.107Z",
    "updatedAt": "2026-05-23T16:06:46.060Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "bpf: reject direct access to nullable PTR_TO_BUF pointers",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: reject direct access to nullable PTR_TO_BUF pointers\n\ncheck_mem_access() matches PTR_TO_BUF via base_type() which strips\nPTR_MAYBE_NULL, allowing direct dereference without a null check.\n\nMap iterator ctx->key and ctx->value are PTR_TO_BUF | PTR_MAYBE_NULL.\nOn stop callbacks these are NULL, causing a kernel NULL dereference.\n\nAdd a type_may_be_null() guard to the PTR_TO_BUF branch, matching the\nexisting PTR_TO_BTF_ID pattern.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b453361384c2db1c703dacb806d5fd36aec4ceca",
              "status": "affected",
              "versionType": "git",
              "lessThan": "10bc4a4dcded509c5d5c67d497900c3922c604cd"
            },
            {
              "version": "20b2aff4bc15bda809f994761d5719827d66c0b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "21a10c06ffae24cb01fd174a7ab7736001d2ea56"
            },
            {
              "version": "20b2aff4bc15bda809f994761d5719827d66c0b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8755066f7bd0f4ac46a29d1708c7b20894539252"
            },
            {
              "version": "20b2aff4bc15bda809f994761d5719827d66c0b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "70abd9d118da2f56beb4ec22e3a29becae373535"
            },
            {
              "version": "20b2aff4bc15bda809f994761d5719827d66c0b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "63276547debc4d8a73eefb2c5273b2a905c961b0"
            },
            {
              "version": "20b2aff4bc15bda809f994761d5719827d66c0b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4f6c99dc0420f1a3d671c1b8ab8a7ac84d9cba09"
            },
            {
              "version": "20b2aff4bc15bda809f994761d5719827d66c0b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b0db1accbc7395657c2b79db59fa9fae0d6656f3"
            },
            {
              "version": "e982070f8970bb62e69ed7c9cafff886ed200349",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.37",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.203"
            },
            {
              "version": "5.16.11",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.17"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.17"
            },
            {
              "version": "5.15.203",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.168",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.134",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.81",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}