{
  "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-2026-31738",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31738",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-01T14:14:34.900Z",
    "updatedAt": "2026-05-23T16:05:52.050Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "vxlan: validate ND option lengths in vxlan_na_create",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: validate ND option lengths in vxlan_na_create\n\nvxlan_na_create() walks ND options according to option-provided\nlengths. A malformed option can make the parser advance beyond the\ncomputed option span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "901c1dd3bab2955d7e664f914c374c8c3ac2b958"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e476745917a1e288eb15e7ff49d286a86a4861d3"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2029712fb2c87e9a8c75094906f2ee29bf08c500"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "602596c69a70e50d9ab8c6ae0290a01f88229dd7"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "de20d2e3b9179d132f5f5b44e490d7c916c6321b"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eddfce70a6f3107d1679b0c2fcbeb96b593bd679"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b69c4236255bd8de16cd876e58c6f0867d1d78b1"
            },
            {
              "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "afa9a05e6c4971bd5586f1b304e14d61fb3d9385"
            },
            {
              "version": "d8be18c52dbc94989f6d74637b731af39cd3d902",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3927dace523706cc00f808520eaf2125dd7c07b5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3.12.18",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.13"
            },
            {
              "version": "3.13.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.14"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.14"
            },
            {
              "version": "5.10.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}