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CVE-2026-92513 (GCVE-0-2026-92513)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10
VLAI
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8001e9257eca23264550ff9e34598ee43a80f0f9 , < 4aaa2ab816c710be7385b31d08373edcdcd71656 (git)
Affected: 8001e9257eca23264550ff9e34598ee43a80f0f9 , < 638b9a5364c1482e5d104823c1a3884b3d249484 (git)
Affected: 8001e9257eca23264550ff9e34598ee43a80f0f9 , < 97f7c2262c28ebcae64fc957ee978646684a5ed9 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/infiniband/hw/mana/qp.c"
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              "operator": "OR"
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          "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:22.793Z",
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    "datePublished": "2026-09-17T16:10:22.793Z",
    "dateReserved": "2026-09-16T12:21:13.873Z",
    "dateUpdated": "2026-09-17T16:10:22.793Z",
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        "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",
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        "vulnStatus": "Received"
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}



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