fkie_cve-2022-50229
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-06-18 13:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: bcd2000: Fix a UAF bug on the error path of probing When the driver fails in snd_card_register() at probe time, it will free the 'bcd2k->midi_out_urb' before killing it, which may cause a UAF bug. The following log can reveal it: [ 50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0 [ 50.729530] Call Trace: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Fix this by adding usb_kill_urb() before usb_free_urb().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: bcd2000: Fix a UAF bug on the error path of probing\n\nWhen the driver fails in snd_card_register() at probe time, it will free\nthe \u0027bcd2k-\u003emidi_out_urb\u0027 before killing it, which may cause a UAF bug.\n\nThe following log can reveal it:\n\n[   50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000]\n[   50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0\n[   50.729530] Call Trace:\n[   50.732899]  bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000]\n\nFix this by adding usb_kill_urb() before usb_free_urb()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: bcd2000: corrige un error de UAF en la ruta de error del sondeo Cuando el controlador falla en snd_card_register() en el momento del sondeo, liberar\u00e1 \u0027bcd2k-\u0026gt;midi_out_urb\u0027 antes de matarlo, lo que puede causar un error de UAF. El siguiente registro puede revelarlo: [ 50.727020] ERROR: KASAN: uso despu\u00e9s de la liberaci\u00f3n en bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88810fab0e88 por el intercambiador de tareas/4/0 [ 50.729530] Seguimiento de llamadas: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Solucione esto agregando usb_kill_urb() antes de usb_free_urb()."
    }
  ],
  "id": "CVE-2022-50229",
  "lastModified": "2025-06-18T13:47:40.833",
  "metrics": {},
  "published": "2025-06-18T11:15:53.967",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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