UnratedFix available

RDMA/mana_ib: drain QP references after partial table insertion

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: drain QP references after partial table insertion mana_table_store_ud_qp() publishes a QP at its send-queue id before inserting the receive-queue id, dropping the XArray lock between the two xa_insert_irq() calls. A concurrent completion handler can look up the QP and take a transient reference. When the second insertion fails, the rollback erased only the send-queue entry and returned, leaving both the initial table reference and the transient reference outstanding while RDMA core frees the QP, causing a use-after-free. Drain the reference as normal destruction does: drop the initial reference and wait for qp->free, releasing the QP only after every concurrent lookup returns its reference.

Products: Kernel
Affected versions: Not specified
Fixed versions: 6.18.52, 7.2.6
CVEs: CVE-2026-92513
Confirmed fixed CVEs: Not specified
Updated in this feed: 3 Nov 2026, 06:14 UTC · Revision 1

Source evidence

RDMA/mana_ib: drain QP references after partial table insertion

core-osv · Original source

Published 17 Sept 2026, 16:10 UTC

osv:CVE-2026-92513

Kernel

Fixed versions: 6.18.52, 7.2.6

Complete source record

{
  "id": "f9c3953133009cd369307a5ada2760b5e688728b3ac70ed137b0c462dd23d258",
  "url": "https://osv.dev/vulnerability/CVE-2026-92513",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RDMA/mana_ib: drain QP references after partial table insertion",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: drain QP references after partial table insertion mana_table_store_ud_qp() publishes a QP at its send-queue id before inserting the receive-queue id, dropping the XArray lock between the two xa_insert_irq() calls. A concurrent completion handler can look up the QP and take a transient reference. When the second insertion fails, the rollback erased only the send-queue entry and returned, leaving both the initial table reference and the transient reference outstanding while RDMA core frees the QP, causing a use-after-free. Drain the reference as normal destruction does: drop the initial reference and wait for qp->free, releasing the QP only after every concurrent lookup returns its reference.",
    "evidence": "osv:CVE-2026-92513",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-92513",
      "aliases": [
        "CVE-2026-92513"
      ],
      "affected": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
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                {
                  "fixed": "4aaa2ab816c710be7385b31d08373edcdcd71656"
                },
                {
                  "fixed": "638b9a5364c1482e5d104823c1a3884b3d249484"
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                {
                  "fixed": "97f7c2262c28ebcae64fc957ee978646684a5ed9"
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          ],
          "database_specific": {
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
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                {
                  "fixed": "6.18.52"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92513.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.215185939Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4aaa2ab816c710be7385b31d08373edcdcd71656",
        "https://git.kernel.org/stable/c/638b9a5364c1482e5d104823c1a3884b3d249484",
        "https://git.kernel.org/stable/c/97f7c2262c28ebcae64fc957ee978646684a5ed9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92513.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-92513",
        "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/2026/92xxx/CVE-2026-92513.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-92513",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 493000,
  "published_at": "2026-09-17T16:10:22.793+00:00"
}