fkie_cve-2022-49555
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-02-26 07:01
Severity ?
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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_qca: Use del_timer_sync() before freeing\n\nWhile looking at a crash report on a timer list being corrupted, which\nusually happens when a timer is freed while still active. This is\ncommonly triggered by code calling del_timer() instead of\ndel_timer_sync() just before freeing.\n\nOne possible culprit is the hci_qca driver, which does exactly that.\n\nEric mentioned that wake_retrans_timer could be rearmed via the work\nqueue, so also move the destruction of the work queue before\ndel_timer_sync()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: hci_qca: usar del_timer_sync() antes de liberar Al mirar un informe de fallas en una lista de temporizadores que se est\u00e1 corrompiendo, lo que generalmente sucede cuando se libera un temporizador mientras a\u00fan est\u00e1 activo. Esto se activa com\u00fanmente por el c\u00f3digo que llama a del_timer() en lugar de del_timer_sync() justo antes de liberar. Un posible culpable es el controlador hci_qca, que hace exactamente eso. Eric mencion\u00f3 que wake_retrans_timer podr\u00eda volver a armarse a trav\u00e9s de la cola de trabajo, as\u00ed que tambi\u00e9n mueva la destrucci\u00f3n de la cola de trabajo antes de del_timer_sync()."
    }
  ],
  "id": "CVE-2022-49555",
  "lastModified": "2025-02-26T07:01:31.313",
  "metrics": {},
  "published": "2025-02-26T07:01:31.313",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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