GHSA-2X39-H24H-R965

Vulnerability from github – Published: 2026-08-15 15:30 – Updated: 2026-08-19 18:32
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents

The wait and bulk receive paths walk variable-length commands from a USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be dispatched, and the wait path copies a matching command into a fixed caller-owned struct kvaser_cmd using the device-provided length.

Reject nonzero commands that do not contain the fixed header or that extend beyond the current USB buffer item. In the wait path, also reject a matching command that exceeds the destination before copying it.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74458"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T13:17:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents\n\nThe wait and bulk receive paths walk variable-length commands from a\nUSB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be\ndispatched, and the wait path copies a matching command into a fixed\ncaller-owned struct kvaser_cmd using the device-provided length.\n\nReject nonzero commands that do not contain the fixed header or that\nextend beyond the current USB buffer item. In the wait path, also reject\na matching command that exceeds the destination before copying it.",
  "id": "GHSA-2x39-h24h-r965",
  "modified": "2026-08-19T18:32:27Z",
  "published": "2026-08-15T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74458"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/185cb1fa38142a3cbf223dd8b3abb24217f330d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21f0465fd86d77794aaed8e05f833634f68d178d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d0897ec623e422695d70d80ae456f89476c5328"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/695aea154bb2d453e6daada1510972fafd075285"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72f96c2942f11a0ae8663adcb3d9ee986e07d4fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c00ec53d7dec08134e97071850cc00ef000c5b77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9e91672526ffa279709b15490118aea1bdee714"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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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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