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CVE-2026-72468 (GCVE-0-2026-72468)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:57 – Updated: 2026-08-17 05:15
VLAI
Title
xprtrdma: Initialize re_id before removal registration
Summary
In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Initialize re_id before removal registration rpcrdma_create_id() registers ep->re_rn with the rpcrdma ib_client before returning the new rdma_cm_id to rpcrdma_ep_create(). However rpcrdma_ep_create() currently stores that pointer in ep->re_id only after rpcrdma_create_id() returns. A local administrator can race an NFS/RDMA mount against RDMA device removal. If rpcrdma_remove_one() observes the just-registered notification before rpcrdma_ep_create() assigns ep->re_id, rpcrdma_ep_removal_done() calls trace_xprtrdma_device_removal(NULL). The tracepoint dereferences id->device->name and copies id->route.addr.dst_addr, so the callback can crash the kernel with a NULL pointer dereference. Store the rdma_cm_id in ep->re_id immediately before publishing ep->re_rn. The existing error path still destroys the id directly if registration fails; ep is then freed by the caller without using ep->re_id. Remove the later duplicate assignment in rpcrdma_ep_create().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3f4eb9ff923413cdb4c7e171c06d3564f6286712 , < 51248d877bbc6e604e38aeaf776c2781cb4f0dbd (git)
Affected: 3f4eb9ff923413cdb4c7e171c06d3564f6286712 , < 28743571c17b58c21a7216fc9faaf8028df5869b (git)
Affected: 3f4eb9ff923413cdb4c7e171c06d3564f6286712 , < 264ccd7871915749bee55fe0c39467a7f08d5479 (git)
Affected: 3f4eb9ff923413cdb4c7e171c06d3564f6286712 , < bb7caa63e1db22fd03e8dc591b12169e99169dff (git)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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          "product": "Linux",
          "programFiles": [
            "net/sunrpc/xprtrdma/verbs.c"
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxprtrdma: Initialize re_id before removal registration\n\nrpcrdma_create_id() registers ep-\u003ere_rn with the rpcrdma ib_client\nbefore returning the new rdma_cm_id to rpcrdma_ep_create(). However\nrpcrdma_ep_create() currently stores that pointer in ep-\u003ere_id only\nafter rpcrdma_create_id() returns.\n\nA local administrator can race an NFS/RDMA mount against RDMA device\nremoval. If rpcrdma_remove_one() observes the just-registered\nnotification before rpcrdma_ep_create() assigns ep-\u003ere_id,\nrpcrdma_ep_removal_done() calls trace_xprtrdma_device_removal(NULL).\nThe tracepoint dereferences id-\u003edevice-\u003ename and copies\nid-\u003eroute.addr.dst_addr, so the callback can crash the kernel with a\nNULL pointer dereference.\n\nStore the rdma_cm_id in ep-\u003ere_id immediately before publishing\nep-\u003ere_rn. The existing error path still destroys the id directly if\nregistration fails; ep is then freed by the caller without using\nep-\u003ere_id. Remove the later duplicate assignment in rpcrdma_ep_create()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:15:13.672Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/51248d877bbc6e604e38aeaf776c2781cb4f0dbd"
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        {
          "url": "https://git.kernel.org/stable/c/28743571c17b58c21a7216fc9faaf8028df5869b"
        },
        {
          "url": "https://git.kernel.org/stable/c/264ccd7871915749bee55fe0c39467a7f08d5479"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb7caa63e1db22fd03e8dc591b12169e99169dff"
        }
      ],
      "title": "xprtrdma: Initialize re_id before removal registration",
      "x_generator": {
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      }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72468",
    "datePublished": "2026-08-15T05:57:11.171Z",
    "dateReserved": "2026-08-09T03:40:39.933Z",
    "dateUpdated": "2026-08-17T05:15:13.672Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-09-05",
      "epss": "0.002",
      "percentile": "0.09878"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T18:19:27+00:00",
      "cve": "CVE-2026-72468",
      "id": "CVE-2026-72468",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: xprtrdma: Initialize re_id before removal registration",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72468.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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