{
  "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-2024-26752",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26752",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-03T17:00:37.340Z",
    "updatedAt": "2026-05-23T15:37:36.571Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "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": "l2tp: pass correct message length to ip6_append_data",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nl2tp: pass correct message length to ip6_append_data\n\nl2tp_ip6_sendmsg needs to avoid accounting for the transport header\ntwice when splicing more data into an already partially-occupied skbuff.\n\nTo manage this, we check whether the skbuff contains data using\nskb_queue_empty when deciding how much data to append using\nip6_append_data.\n\nHowever, the code which performed the calculation was incorrect:\n\n     ulen = len + skb_queue_empty(&sk->sk_write_queue) ? transhdrlen : 0;\n\n...due to C operator precedence, this ends up setting ulen to\ntranshdrlen for messages with a non-zero length, which results in\ncorrupted packets on the wire.\n\nAdd parentheses to correct the calculation in line with the original\nintent.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "559d697c5d072593d22b3e0bd8b8081108aeaf59",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c3ce64bc9d36ca9164dd6c77ff144c121011aae"
            },
            {
              "version": "1fc793d68d50dee4782ef2e808913d5dd880bcc6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c1d3a84a67db910ce28a871273c992c3d7f9efb5"
            },
            {
              "version": "96b2e1090397217839fcd6c9b6d8f5d439e705ed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dcb4d14268595065c85dc5528056713928e17243"
            },
            {
              "version": "cd1189956393bf850b2e275e37411855d3bd86bb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0da15a70395182ee8cb75716baf00dddc0bea38d"
            },
            {
              "version": "f6a7182179c0ed788e3755ee2ed18c888ddcc33f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "13cd1daeea848614e585b2c6ecc11ca9c8ab2500"
            },
            {
              "version": "9d4c75800f61e5d75c1659ba201b6c0c7ead3070",
              "status": "affected",
              "versionType": "git",
              "lessThan": "804bd8650a3a2bf3432375f8c97d5049d845ce56"
            },
            {
              "version": "9d4c75800f61e5d75c1659ba201b6c0c7ead3070",
              "status": "affected",
              "versionType": "git",
              "lessThan": "83340c66b498e49353530e41542500fc8a4782d6"
            },
            {
              "version": "9d4c75800f61e5d75c1659ba201b6c0c7ead3070",
              "status": "affected",
              "versionType": "git",
              "lessThan": "359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79"
            },
            {
              "version": "7626b9fed53092aa2147978070e610ecb61af844",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "fe80658c08e3001c80c5533cd41abfbb0e0e28fd",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.19.296",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.19.308"
            },
            {
              "version": "5.4.258",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.270"
            },
            {
              "version": "5.10.198",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.211"
            },
            {
              "version": "5.15.135",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.150"
            },
            {
              "version": "6.1.57",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.80"
            },
            {
              "version": "4.14.327",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "6.5.7",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.6"
            },
            {
              "version": "4.19.308",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.150",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.80",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}