{
  "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-2026-98479",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98479",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-18T15:15:53.663Z",
    "updatedAt": "2026-10-19T09:20:16.790Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "scsi: libiscsi_tcp: Check the data direction of a Data-In PDU",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi_tcp: Check the data direction of a Data-In PDU\n\nThe Data-In branch of iscsi_tcp_hdr_dissect() resolves the ITT to a task\nand copies the PDU's data segment into that command's scatterlist without\nasking whether the command was reading. iscsi_tcp_r2t_rsp() in the same\nfile does ask, and rejects an R2T for a command that is not DMA_TO_DEVICE.\n\nA target that answers a WRITE command's ITT with a Data-In therefore has\nthe initiator write target-supplied bytes into the pages that write was\nabout to send. Those are the caller's own pinned pages for an O_DIRECT\nwrite, and page cache pages for a buffered one.\n\nObserved against a test target that emits one 512-byte Data-In naming a 128\nKB write's ITT, after the R2T for that write. With O_DIRECT the caller's\nbuffer ends up holding 512 bytes of the target's data while pwrite()\nreturns 131072. Buffered is quieter: pwrite() and fsync() both succeed,\nnothing is logged, and reading those blocks back returns the target's bytes\nout of the page cache without a command going on the wire.\n\nCheck the direction before using the scatterlist, the way the R2T path\nalready does.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "79991b770fc3685b1d5cf805b659a879edd19931"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8db1232945bc663fb94f300090a1fc108de99296"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "94e5bdd08e51c450d954bc592f591c233ca5c9df"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "de96dc11aee0d058927bff94a168e3c5c46483e2"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e3b25bf2cf2496e85bc05b33360faf9fdf880e03"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ee56b5e18f566c0b5a183379dcd63d402cebf2f8"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "24ffc919467d20951f0f132d1c75294e2e91e09b"
            },
            {
              "version": "a081c13e39b5c17052a7b46fafa61019c4c110ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bce07e2f37b5e4a427d36fd6b1c14067b27591db"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.29",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.29"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.112",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.55",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}