{
  "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-2026-46043",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46043",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-27T12:56:57.987Z",
    "updatedAt": "2026-10-19T19:26:42.012Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv\n\nrxe_rcv() currently checks only that the incoming packet is at least\nheader_size(pkt) bytes long before payload_size() is used.\n\nHowever, payload_size() subtracts both the attacker-controlled BTH pad\nfield and RXE_ICRC_SIZE from pkt->paylen:\n\n  payload_size = pkt->paylen - offset[RXE_PAYLOAD] - bth_pad(pkt)\n                 - RXE_ICRC_SIZE\n\nThis means a short packet can still make payload_size() underflow even\nif it includes enough bytes for the fixed headers. Simply requiring\nheader_size(pkt) + RXE_ICRC_SIZE is not sufficient either, because a\npacket with a forged non-zero BTH pad can still leave payload_size()\nnegative and pass an underflowed value to later receive-path users.\n\nFix this by validating pkt->paylen against the full minimum length\nrequired by payload_size(): header_size(pkt) + bth_pad(pkt) +\nRXE_ICRC_SIZE.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c4376c672c3648d5bdc31dfffc329d07164f93c4"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5fedefec757192dcaad29a664ac332c7601be144"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2c0d71ef12f46c57d37bc571f3f2797db7eb50cc"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2fd4f8b749309a61c3f3f88ee8891d94f79e1240"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f83519a4c122c9c7a850a2197648a9ff4c67c520"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b924f3a26b21330a837cfe72e819b6393bbeeaa"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e8ee0e792d475b1067c199ef0af1b6221fa6f43d"
            },
            {
              "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7244491dab347f648e661da96dc0febadd9daec3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.8"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.140",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.86",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.27",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}