{
  "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-2024-26826",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26826",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-17T09:43:51.741Z",
    "updatedAt": "2026-08-05T11:27:40.642Z",
    "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": "mptcp: fix data re-injection from stale subflow",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix data re-injection from stale subflow\n\nWhen the MPTCP PM detects that a subflow is stale, all the packet\nscheduler must re-inject all the mptcp-level unacked data. To avoid\nacquiring unneeded locks, it first try to check if any unacked data\nis present at all in the RTX queue, but such check is currently\nbroken, as it uses TCP-specific helper on an MPTCP socket.\n\nFunnily enough fuzzers and static checkers are happy, as the accessed\nmemory still belongs to the mptcp_sock struct, and even from a\nfunctional perspective the recovery completed successfully, as\nthe short-cut test always failed.\n\nA recent unrelated TCP change - commit d5fed5addb2b (\"tcp: reorganize\ntcp_sock fast path variables\") - exposed the issue, as the tcp field\nreorganization makes the mptcp code always skip the re-inection.\n\nFix the issue dropping the bogus call: we are on a slow path, the early\noptimization proved once again to be evil.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1e1d9d6f119c55c05e8ea78ed3e49046690abffd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6f95120f898b40d13fd441225ef511307853c9c2"
            },
            {
              "version": "1e1d9d6f119c55c05e8ea78ed3e49046690abffd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6673d9f1c2cd984390550dbdf7d5ae07b20abbf8"
            },
            {
              "version": "1e1d9d6f119c55c05e8ea78ed3e49046690abffd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b609c783c535493aa3fca22c7e40a120370b1ca5"
            },
            {
              "version": "1e1d9d6f119c55c05e8ea78ed3e49046690abffd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "624902eab7abcb8731b333ec73f206d38d839cd8"
            },
            {
              "version": "1e1d9d6f119c55c05e8ea78ed3e49046690abffd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b6c620dc43ccb4e802894e54b651cf81495e9598"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.149",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.79",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.18",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}