{
  "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-2026-72400",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72400",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:56:25.572Z",
    "updatedAt": "2026-10-16T18:55:21.670Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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": "seg6: validate SRH length before reading fixed fields",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nseg6: validate SRH length before reading fixed fields\n\nseg6_validate_srh() reads fixed SRH fields such as srh->type and\nsrh->hdrlen before checking that the supplied length covers the fixed\nstruct ipv6_sr_hdr fields.\n\nThe BPF SEG6 encap path reaches this with a BPF program-supplied pointer\nand length: bpf_lwt_push_encap() and the SEG6 local BPF END_B6 and\nEND_B6_ENCAP actions call bpf_push_seg6_encap(), which forwards the\nlength to seg6_validate_srh() with no minimum-size guard.  A 2-byte SEG6\nencap header can therefore make the validator read srh->type at offset 2\nbeyond the caller-supplied buffer.\n\nReject lengths shorter than the fixed SRH at the top of\nseg6_validate_srh(), before any field is read.  This fixes the BPF helper\npath and keeps the common validator robust.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "715eb12e453df752f1b4baaf972c3acff0ab9402"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7247d05c987c3eec4bb7c2306dbd77ecdf3b7c73"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "071f1a38d7ddbadee29c09b9e3ee0ff3a61e6a0e"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "804bb969f194c93497ba632b98343794c6367fdc"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0fc7069d39239978130c37ebceaec85c8948d3f1"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8dba7a94a269b88e500aafc25ad567ef6a423698"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c9961336aa5ff83092f23e33ee86666a9dbd1b2a"
            },
            {
              "version": "fe94cc290f535709d3c5ebd1e472dfd0aec7ee79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a75d99f46bf21b45965ce39c5cfb3b8bb5ffb1aa"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.18"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}