{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-46140",
  "modified": "2026-10-07T14:35:31Z",
  "upstream": [
    "CVE-2026-46140"
  ],
  "published": "2026-05-28T09:36:53Z",
  "summary": "Bluetooth: btmtk: validate WMT event SKB length before struct access",
  "details": "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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
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        "1:6.12.34-1+rpt1~bookworm",
        "1:6.12.47-1+rpt1~bookworm",
        "1:6.12.62-1+rpt1~bookworm",
        "1:6.12.75-1+rpt1~bookworm",
        "1:6.12.87-1+rpt1~bookworm"
      ],
      "ecosystem_specific": {
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.34+rpt-rpi-v7",
            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.34+rpt-rpi-v7l",
            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
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          },
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          },
          {
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          },
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          },
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      "database_specific": {
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    },
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      "package": {
        "ecosystem": "Raspberry Pi OS:13",
        "name": "linux"
      },
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        "1:6.12.47-1+rpt1",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46140"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/36c85f7029484d5ede769f8873d16e9c8e35533c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-07-04T11:51:32Z"
  }
}