xprtrdma: Sanitize the reply credit grant after parsing

{
  "id": "f6465b268e80dd1fa1ba5be277939130e5c64e87e58db23de392d8a9e9e97d38",
  "url": "https://osv.dev/vulnerability/CVE-2026-72465",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "xprtrdma: Sanitize the reply credit grant after parsing",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Sanitize the reply credit grant after parsing The out_norqst exit in rpcrdma_reply_handler() branches away before the credit clamp, so a reply that matches no pending request reaches out_post carrying the raw credit value parsed from the wire. rpcrdma_post_recvs() does not bound its @needed argument: the refill loop allocates and chains Receive WRs until the count is satisfied or allocation fails. A peer that sends a well-formed reply carrying an unknown XID and an inflated credit grant therefore drives rep allocation and Receive posting past re_max_requests on every such reply. Move the clamp to immediately after the credit field is parsed, ahead of the first branch that can reach out_post, so every later consumer sees a sanitized value. The cwnd update stays on the matched-request path.",
    "evidence": "osv:CVE-2026-72465",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-72465",
      "aliases": [
        "CVE-2026-72465"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d01d6670c169316115b26dfb3585a73dfe40b563"
                },
                {
                  "fixed": "7cf332b3d82d73ffceedca6b4a120be074172021"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d1b159356a3584943192712392fcb2439aafb8c1"
                },
                {
                  "fixed": "41634242140173eabbf54f899f9c70b5c685e786"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "17da9e0caa8615f6fc3b4022eadbd78a9aea1a2a"
                },
                {
                  "fixed": "8be1bb378def94a5cb8f7527a191e476407118ec"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e7ae0883c8c89b901226de43862184bf37054338"
                },
                {
                  "fixed": "469b22376ee73369711ecf2761bd122ef4195963"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "704f3f640f72db4d44ec5ce3db8d4e150c974bc7"
                },
                {
                  "fixed": "33db78b1b24fc6a464ae08aa4d2538c5f883eb5e"
                },
                {
                  "fixed": "c3a628aab2dc8f5fd7bff86ceaeae64de590e60a"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72465.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72465.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.534366576Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/33db78b1b24fc6a464ae08aa4d2538c5f883eb5e",
        "https://git.kernel.org/stable/c/41634242140173eabbf54f899f9c70b5c685e786",
        "https://git.kernel.org/stable/c/469b22376ee73369711ecf2761bd122ef4195963",
        "https://git.kernel.org/stable/c/7cf332b3d82d73ffceedca6b4a120be074172021",
        "https://git.kernel.org/stable/c/8be1bb378def94a5cb8f7527a191e476407118ec",
        "https://git.kernel.org/stable/c/c3a628aab2dc8f5fd7bff86ceaeae64de590e60a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72465.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-72465",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72465.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72465",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496422,
  "published_at": "2026-08-15T05:57:08.767+00:00"
}