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Bluetooth: MGMT: free the mesh send cancel command when it is cancelled

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.188, 6.12.110, 6.18.52, 6.6.157, 7.2.6
CVEs
CVE-2026-90253
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 11:35 UTC · Revision 1

Source evidence

Bluetooth: MGMT: free the mesh send cancel command when it is cancelled

core-osv · Original source

Published 17 Sept 2026, 16:07 UTC

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.

osv:CVE-2026-90253

Kernel

Fixed versions: 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6

Complete source record
{
  "id": "72304919b6cbadd2d785ed84fe6b1aaadbdcd5a7dfae0eba61a238f1f40d4343",
  "url": "https://osv.dev/vulnerability/CVE-2026-90253",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: MGMT: free the mesh send cancel command when it is cancelled",
    "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.",
    "evidence": "osv:CVE-2026-90253",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.188",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
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    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-90253",
      "aliases": [
        "CVE-2026-90253"
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      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                {
                  "fixed": "88e30d036d777b00aed42bd35000de23ff40910c"
                },
                {
                  "fixed": "05438d338a875a9daa08ca3f6a35b4480cf13de4"
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                {
                  "fixed": "fa46d428c014e7b72a18634679815670418e67dc"
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                {
                  "fixed": "3c742feda8fcabf741a17bcf668b63c8f606f9c5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90253.json"
          }
        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
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                {
                  "introduced": "6.1.0"
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              ]
            },
            {
              "type": "ECOSYSTEM",
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                {
                  "introduced": "6.2.0"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
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            },
            {
              "type": "ECOSYSTEM",
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                {
                  "introduced": "6.13.0"
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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-2026-90253.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.332905370Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/05438d338a875a9daa08ca3f6a35b4480cf13de4",
        "https://git.kernel.org/stable/c/3c742feda8fcabf741a17bcf668b63c8f606f9c5",
        "https://git.kernel.org/stable/c/416fabca9b7237b76aa9cafcf8c497b8ac00d88c",
        "https://git.kernel.org/stable/c/88e30d036d777b00aed42bd35000de23ff40910c",
        "https://git.kernel.org/stable/c/b609341ee56967d9a45845ff26f79336d2114b55",
        "https://git.kernel.org/stable/c/fa46d428c014e7b72a18634679815670418e67dc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90253.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90253",
        "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/2026/90xxx/CVE-2026-90253.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90253",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 495018,
  "published_at": "2026-09-17T16:07:53.435+00:00"
}