FKIE_CVE-2026-46184

Vulnerability from fkie_nvd - Published: 2026-05-28 10:16 - Updated: 2026-05-28 13:44
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: sound: ua101: fix division by zero at probe Add a missing sanity check for bNrChannels in detect_usb_format() to prevent a division by zero in playback_urb_complete() and capture_urb_complete(). USB core does not validate class-specific descriptor fields such as bNrChannels, so drivers must verify them before use. If a device provides bNrChannels = 0, frame_bytes becomes zero and is later used as a divisor in the URB completion handlers, leading to a kernel crash.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsound: ua101: fix division by zero at probe\n\nAdd a missing sanity check for bNrChannels in detect_usb_format()\nto prevent a division by zero in playback_urb_complete() and\ncapture_urb_complete().\n\nUSB core does not validate class-specific descriptor fields such\nas bNrChannels, so drivers must verify them before use. If a\ndevice provides bNrChannels = 0, frame_bytes becomes zero and is\nlater used as a divisor in the URB completion handlers, leading\nto a kernel crash."
    }
  ],
  "id": "CVE-2026-46184",
  "lastModified": "2026-05-28T13:44:01.663",
  "metrics": {},
  "published": "2026-05-28T10:16:34.023",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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