Bluetooth: MGMT: Fix status of pending commands flushed on power off

{
  "id": "de14b3bc0ea5170bf25f75753b926ae30c4c203378a19b911937533a8304afaf",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-99091",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: MGMT: Fix status of pending commands flushed on power off",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix status of pending commands flushed on power off cmd_complete_rsp() receives a struct cmd_lookup and, for a pending command that has no cmd_complete callback, falls through to cmd_status_rsp(cmd, data). cmd_status_rsp() reads data as a u8 *, so the status sent comes from the first byte of match->sk's representation, not from match->mgmt_status. commit f53e1c9c726d (\"Bluetooth: MGMT: Fix possible crash on mgmt_index_removed\") changed the callers' data from &status to &match and updated the cmd_complete branch to match->mgmt_status, but left the fall-through passing data unchanged. In mgmt_index_removed() match->sk is NULL, so every such command is answered with status 0x00 (Success) instead of MGMT_STATUS_INVALID_INDEX. In __mgmt_power_off() it is NULL too, unless a Set Powered command was pending: then settings_rsp() has stored that command's socket in match->sk, and the byte sent comes from the socket pointer. Either way the status the caller set, MGMT_STATUS_NOT_POWERED (or MGMT_STATUS_INVALID_INDEX when the device is being unregistered), is lost. Pass the status the callers set. This was seen on a QCA9377 laptop: bluetoothd's Start Discovery, pending when the adapter was powered off, was answered with Command Status 0x00 and no parameters, and bluetoothd 5.72 crashed on the zero-length success. BlueZ master has since added the length check on that path (\"adapter: Fix crash on short star",
    "evidence": "cve:CVE-2026-99091",
    "products": [
      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
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      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-99091",
      "aliases": [
        "CVE-2026-99091"
      ],
      "metrics": [],
      "affected": [
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              "status": "affected",
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          "programFiles": [
            "net/bluetooth/mgmt.c"
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          "defaultStatus": "unaffected"
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        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "programFiles": [
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      "modified": "2026-10-26T14:52:00.262Z",
      "provider": "cve",
      "references": [
        "https://git.kernel.org/stable/c/44ce36c5789ac84e65de1e98c32db9a5ac04ed47",
        "https://git.kernel.org/stable/c/7ed7e038b520cf0dfa12d61c2caddb95e2f6922d",
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      "provider_metadata": {
        "cna": {
          "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "shortName": "Linux",
          "dateUpdated": "2026-10-26T14:52:00.262Z"
        }
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    "related_cves": [
      {
        "value": "CVE-2026-99091",
        "evidence": "/cveMetadata/cveId"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-cve",
  "document_id": 311608,
  "published_at": "2026-10-26T14:52:00.262+00:00"
}