FKIE_CVE-2026-46140

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: Bluetooth: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9 bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0c
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtk: validate WMT event SKB length before struct access\n\nbtmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to\nstruct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc\n(9 bytes) without first checking that the SKB contains enough data.\nA short firmware response causes out-of-bounds reads from SKB tailroom.\n\nUse skb_pull_data() to validate and advance past the base WMT event\nheader. For the FUNC_CTRL case, pull the additional status field bytes\nbefore accessing them."
    }
  ],
  "id": "CVE-2026-46140",
  "lastModified": "2026-05-28T13:44:01.663",
  "metrics": {},
  "published": "2026-05-28T10:16:29.580",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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