Bluetooth: hci_qca: Use del_timer_sync() before freeing

{
  "id": "aa04a849595c3910556f732178a71ef1a29cec5b5aa00a74acf8abd7db5257dc",
  "url": "https://osv.dev/vulnerability/CVE-2022-49555",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: hci_qca: Use del_timer_sync() before freeing",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Use del_timer_sync() before freeing While looking at a crash report on a timer list being corrupted, which usually happens when a timer is freed while still active. This is commonly triggered by code calling del_timer() instead of del_timer_sync() just before freeing. One possible culprit is the hci_qca driver, which does exactly that. Eric mentioned that wake_retrans_timer could be rearmed via the work queue, so also move the destruction of the work queue before del_timer_sync().",
    "evidence": "osv:CVE-2022-49555",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.120",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.45",
            "evidence": "/affected/1/ranges"
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          {
            "value": "5.17.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.18.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-49555",
      "aliases": [
        "CVE-2022-49555"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
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              "type": "GIT",
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              "type": "ECOSYSTEM",
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                  "introduced": "4.3.0"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
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      ],
      "modified": "2026-10-28T02:30:26.594084533Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2",
        "https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b",
        "https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661",
        "https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a",
        "https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49555.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49555",
        "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/2022/49xxx/CVE-2022-49555.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2022-49555",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493161,
  "published_at": "2025-02-26T02:14:03.15+00:00"
}