{
  "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-2021-47001",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47001",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-28T08:13:23.482Z",
    "updatedAt": "2026-08-05T08:45:30.039Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "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": "xprtrdma: Fix cwnd update ordering",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nxprtrdma: Fix cwnd update ordering\n\nAfter a reconnect, the reply handler is opening the cwnd (and thus\nenabling more RPC Calls to be sent) /before/ rpcrdma_post_recvs()\ncan post enough Receive WRs to receive their replies. This causes an\nRNR and the new connection is lost immediately.\n\nThe race is most clearly exposed when KASAN and disconnect injection\nare enabled. This slows down rpcrdma_rep_create() enough to allow\nthe send side to post a bunch of RPC Calls before the Receive\ncompletion handler can invoke ib_post_recv().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2ae50ad68cd79224198b525f7bd645c9da98b6ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eddae8be7944096419c2ae29477a45f767d0fcd4"
            },
            {
              "version": "2ae50ad68cd79224198b525f7bd645c9da98b6ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8834ecb5df22b7ff3c9b0deba7726579bb613f95"
            },
            {
              "version": "2ae50ad68cd79224198b525f7bd645c9da98b6ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "19b5fa9489b5706bc878c3a522a7f771079e2fa0"
            },
            {
              "version": "2ae50ad68cd79224198b525f7bd645c9da98b6ff",
              "status": "affected",
              "versionType": "git",
              "lessThan": "35d8b10a25884050bb3b0149b62c3818ec59f77c"
            },
            {
              "version": "3791c5982ba1eebf2900ee7ca7b9a89619c26d54",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.10.38",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}