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FKIE_CVE-2026-92513

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4aaa2ab816c710be7385b31d08373edcdcd71656
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/638b9a5364c1482e5d104823c1a3884b3d249484
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97f7c2262c28ebcae64fc957ee978646684a5ed9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/mana/qp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4aaa2ab816c710be7385b31d08373edcdcd71656",
              "status": "affected",
              "version": "8001e9257eca23264550ff9e34598ee43a80f0f9",
              "versionType": "git"
            },
            {
              "lessThan": "638b9a5364c1482e5d104823c1a3884b3d249484",
              "status": "affected",
              "version": "8001e9257eca23264550ff9e34598ee43a80f0f9",
              "versionType": "git"
            },
            {
              "lessThan": "97f7c2262c28ebcae64fc957ee978646684a5ed9",
              "status": "affected",
              "version": "8001e9257eca23264550ff9e34598ee43a80f0f9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/mana/qp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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\nRDMA/mana_ib: drain QP references after partial table insertion\n\nmana_table_store_ud_qp() publishes a QP at its send-queue id before\ninserting the receive-queue id, dropping the XArray lock between the two\nxa_insert_irq() calls. A concurrent completion handler can look up the QP\nand take a transient reference. When the second insertion fails, the\nrollback erased only the send-queue entry and returned, leaving both the\ninitial table reference and the transient reference outstanding while RDMA\ncore frees the QP, causing a use-after-free.\n\nDrain the reference as normal destruction does: drop the initial reference\nand wait for qp-\u003efree, releasing the QP only after every concurrent lookup\nreturns its reference."
    }
  ],
  "id": "CVE-2026-92513",
  "lastModified": "2026-09-17T17:17:54.140",
  "metrics": {},
  "published": "2026-09-17T17:17:54.140",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4aaa2ab816c710be7385b31d08373edcdcd71656"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/638b9a5364c1482e5d104823c1a3884b3d249484"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/97f7c2262c28ebcae64fc957ee978646684a5ed9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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