CVE-2026-90253 (GCVE-0-2026-90253)
Vulnerability from cvelistv5
Published
2026-09-17 16:07
Modified
2026-10-19 09:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled mesh_send_cancel() queues the pending command with a NULL destroy callback, so it is only freed if send_cancel() runs. A cancelled entry is leaked, as _hci_cmd_sync_cancel_entry() does not release entry->data when there is no destroy callback, and hci_cmd_sync_clear() cancels every pending entry when the controller is unregistered. Nothing else reclaims it either: mgmt_pending_new() does not put the command on hdev->mgmt_pending. The leak also pins the socket reference taken by mgmt_pending_new(), so the mgmt socket is never released. Free the command from a destroy callback.
References
Impacted products
Vendor Product Version
Linux Linux Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3
Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3
Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3
Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3
Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3
Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3
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{
  "containers": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/mgmt.c"
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: free the mesh send cancel command when it is cancelled\n\nmesh_send_cancel() queues the pending command with a NULL destroy\ncallback, so it is only freed if send_cancel() runs. A cancelled entry is\nleaked, as _hci_cmd_sync_cancel_entry() does not release entry-\u003edata when\nthere is no destroy callback, and hci_cmd_sync_clear() cancels every\npending entry when the controller is unregistered. Nothing else reclaims\nit either: mgmt_pending_new() does not put the command on\nhdev-\u003emgmt_pending.\n\nThe leak also pins the socket reference taken by mgmt_pending_new(), so\nthe mgmt socket is never released.\n\nFree the command from a destroy callback."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:00:30.044Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b609341ee56967d9a45845ff26f79336d2114b55"
        },
        {
          "url": "https://git.kernel.org/stable/c/416fabca9b7237b76aa9cafcf8c497b8ac00d88c"
        },
        {
          "url": "https://git.kernel.org/stable/c/88e30d036d777b00aed42bd35000de23ff40910c"
        },
        {
          "url": "https://git.kernel.org/stable/c/05438d338a875a9daa08ca3f6a35b4480cf13de4"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa46d428c014e7b72a18634679815670418e67dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c742feda8fcabf741a17bcf668b63c8f606f9c5"
        }
      ],
      "title": "Bluetooth: MGMT: free the mesh send cancel command when it is cancelled",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90253",
    "datePublished": "2026-09-17T16:07:53.435Z",
    "dateReserved": "2026-09-11T19:38:34.796Z",
    "dateUpdated": "2026-10-19T09:00:30.044Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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