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FKIE_CVE-2026-72468

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
Severity
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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/264ccd7871915749bee55fe0c39467a7f08d5479
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/28743571c17b58c21a7216fc9faaf8028df5869b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/51248d877bbc6e604e38aeaf776c2781cb4f0dbd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb7caa63e1db22fd03e8dc591b12169e99169dff
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sunrpc/xprtrdma/verbs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "51248d877bbc6e604e38aeaf776c2781cb4f0dbd",
              "status": "affected",
              "version": "3f4eb9ff923413cdb4c7e171c06d3564f6286712",
              "versionType": "git"
            },
            {
              "lessThan": "28743571c17b58c21a7216fc9faaf8028df5869b",
              "status": "affected",
              "version": "3f4eb9ff923413cdb4c7e171c06d3564f6286712",
              "versionType": "git"
            },
            {
              "lessThan": "264ccd7871915749bee55fe0c39467a7f08d5479",
              "status": "affected",
              "version": "3f4eb9ff923413cdb4c7e171c06d3564f6286712",
              "versionType": "git"
            },
            {
              "lessThan": "bb7caa63e1db22fd03e8dc591b12169e99169dff",
              "status": "affected",
              "version": "3f4eb9ff923413cdb4c7e171c06d3564f6286712",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sunrpc/xprtrdma/verbs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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()."
    }
  ],
  "id": "CVE-2026-72468",
  "lastModified": "2026-08-17T06:19:14.683",
  "metrics": {},
  "published": "2026-08-15T06:22:20.877",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/264ccd7871915749bee55fe0c39467a7f08d5479"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/28743571c17b58c21a7216fc9faaf8028df5869b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/51248d877bbc6e604e38aeaf776c2781cb4f0dbd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb7caa63e1db22fd03e8dc591b12169e99169dff"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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