{
  "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-2026-90226",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-90226",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:07:35.322Z",
    "updatedAt": "2026-10-19T09:00:02.755Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "nfc: llcp: avoid userspace overflow on invalid optlen",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: avoid userspace overflow on invalid optlen\n\nnfc_llcp_getsockopt() casts optval to (u32 __user *) for put_user(), so\nthe kernel always stores 4 bytes regardless of the caller-supplied\noptlen. The existing min_t(u32, len, sizeof(u32)) only clamps the length\nreported back to userspace; it does not constrain the store. A call with\noptlen < 4 therefore writes past the user buffer, violating the\ngetsockopt(2) contract for all five supported optnames.\n\nReject any call with optlen < sizeof(u32) up front. 'len' is int, so a\nplain size comparison would promote a negative optlen to size_t and slip\npast the check; an explicit 'len < 0' test is added first to catch\nnegative values before the size compare.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "42859562b7cc4313a84a584f338118edb7087066"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "598dcd53c52f8eeb9dd5382198c03960d5d40fcd"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e40f2f5e7bc06c3ddef781180ce4f7994176547"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "35573c6cb081af2f4a7caeea291302aca5484526"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4c5abaea06292e1dddb70eac1b51589b32c77a3"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8bf228fa02b1ed8ce622fb81fa8edc42be9aeb67"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bd6f1277b62bc1df348ca21739df2bc546fcd493"
            },
            {
              "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "99985bfa8336fadcc69190ba2dcbd5386af3d661"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.10",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.10"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}