Bluetooth: mgmt: Dequeue pending mesh_send_sync entries on cancel

{
  "id": "2d1e557c5b809583a225a812023f096b55c61cf9466fb83b785e3d392ddc4ded",
  "url": "https://osv.dev/vulnerability/CVE-2026-98632",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: mgmt: Dequeue pending mesh_send_sync entries on cancel",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: Dequeue pending mesh_send_sync entries on cancel In send_cancel(), pending mesh_tx objects are removed from the hdev->mesh_pending list and freed via mesh_send_complete(). However, if a mesh transmission was already queued onto hdev->cmd_sync_work_list via mesh_next(), the queued entry retains a raw pointer to mesh_tx. When hci_cmd_sync_work later processes the entry, it attempts to execute mesh_send_sync and its destroy callback mesh_send_start_complete using the already freed mesh_tx pointer, leading to a use-after-free. Fix this by invoking hci_cmd_sync_dequeue() for mesh_send_sync on the target mesh_tx before completing it. If the entry is found and dequeued, its destroy callback will complete and free the object; otherwise, mesh_send_complete() is called directly. Additionally, ensure the transmission queue advances after cancellation or errors. In mesh_send_start_complete(), call mesh_next() on error unless err is -ECANCELED, because hci_cmd_sync_dequeue() holds hdev->cmd_sync_work_lock and calling mesh_next() synchronously would deadlock. Instead, advance the queue in send_cancel() once the lock is released and if no transmission is in progress.",
    "evidence": "osv:CVE-2026-98632",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "6.1.189",
            "evidence": "/affected/1/ranges"
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          {
            "value": "7.2.9",
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    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98632",
      "aliases": [
        "CVE-2026-98632"
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      "affected": [
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                  "fixed": "2189a219397d8e73808a67c4aade837b635705da"
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                  "fixed": "03ced4687fb79286be7fdee0fc58d2c74de3e7bb"
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                  "fixed": "71af682ba4692c2ed9ace4c3d4ca462ae368c029"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98632.json"
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      ],
      "modified": "2026-10-28T02:30:28.900394108Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/03ced4687fb79286be7fdee0fc58d2c74de3e7bb",
        "https://git.kernel.org/stable/c/084be90948632a5a358821e687b11a14445aae76",
        "https://git.kernel.org/stable/c/2189a219397d8e73808a67c4aade837b635705da",
        "https://git.kernel.org/stable/c/718a8ffa180d469f99ad4f746f00cafd39456415",
        "https://git.kernel.org/stable/c/71af682ba4692c2ed9ace4c3d4ca462ae368c029",
        "https://git.kernel.org/stable/c/f84e52829021d00bca8e067302f597c71af1f71a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98632.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98632",
        "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/2026/98xxx/CVE-2026-98632.json"
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    "related_cves": [
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        "value": "CVE-2026-98632",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 495843,
  "published_at": "2026-10-18T15:19:56.287+00:00"
}