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)
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{
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          "programFiles": [
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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()."
        }
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    "datePublished": "2026-08-15T05:57:11.171Z",
    "dateReserved": "2026-08-09T03:40:39.933Z",
    "dateUpdated": "2026-08-17T05:15:13.672Z",
    "state": "PUBLISHED"
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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()."
          }
        ],
        "id": "CVE-2026-72468",
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      "id": "CVE-2026-72468",
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      "cve": "CVE-2026-72468",
      "id": "CVE-2026-72468",
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      "title": "SUSE CVE CVE-2026-72468",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72468.json",
      "version": "4"
    }
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}



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