{
  "id": "CVE-2022-49686",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-02-26T07:01:43.437",
  "lastModified": "2025-02-26T07:01:43.437",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: uvc: fix list double add in uvcg_video_pump\n\nA panic can occur if the endpoint becomes disabled and the\nuvcg_video_pump adds the request back to the req_free list after it has\nalready been queued to the endpoint. The endpoint complete will add the\nrequest back to the req_free list. Invalidate the local request handle\nonce it's been queued.\n\n<6>[  246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0)\n<3>[  246.797078][   T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90.\n<6>[  246.797213][   T26] ------------[ cut here ]------------\n<2>[  246.797224][   T26] kernel BUG at lib/list_debug.c:31!\n<6>[  246.807073][   T26] Call trace:\n<6>[  246.807180][   T26]  uvcg_video_pump+0x364/0x38c\n<6>[  246.807366][   T26]  process_one_work+0x2a4/0x544\n<6>[  246.807394][   T26]  worker_thread+0x350/0x784\n<6>[  246.807442][   T26]  kthread+0x2ac/0x320"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: gadget: uvc: fix list double add in uvcg_video_pump Puede producirse un p\u00e1nico si el endpoint se deshabilita y uvcg_video_pump agrega la solicitud nuevamente a la lista req_free despu\u00e9s de que ya se haya puesto en cola en el endpoint. La finalizaci\u00f3n del endpoint agregar\u00e1 la solicitud nuevamente a la lista req_free. Invalida el identificador de solicitud local una vez que se haya puesto en cola.  &lt;6&gt;[ 246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0) &lt;3&gt;[ 246.797078][ T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90. &lt;6&gt;[ 246.797213][ T26] ------------[ cut here ]------------ &lt;2&gt;[ 246.797224][ T26] kernel BUG at lib/list_debug.c:31! &lt;6&gt;[ 246.807073][ T26] Call trace: &lt;6&gt;[ 246.807180][ T26] uvcg_video_pump+0x364/0x38c &lt;6&gt;[ 246.807366][ T26] process_one_work+0x2a4/0x544 &lt;6&gt;[ 246.807394][ T26] worker_thread+0x350/0x784 &lt;6&gt;[ 246.807442][ T26] kthread+0x2ac/0x320 "
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/96163f835e65f8c9897487fac965819f0651d671",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d95ac8b920de1d39525fadc408ce675697626ca6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}