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GHSA-F682-7H79-JMQF

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-14 15:32
VLAI
Details

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

fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write

The trailing byte path in altera_cvp_send_block() dereferences a u32 pointer even when only 1-3 bytes remain in the input buffer. If the buffer ends at a page or scatterlist boundary, this can read past the valid image data and fault.

Copy the remaining bytes into a zero-initialized u32 before writing the final word so only valid bytes are read from the input buffer.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89730"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:20:03Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: altera-cvp: Avoid out-of-bounds read in trailing byte write\n\nThe trailing byte path in altera_cvp_send_block() dereferences a u32\npointer even when only 1-3 bytes remain in the input buffer. If the buffer\nends at a page or scatterlist boundary, this can read past the valid image\ndata and fault.\n\nCopy the remaining bytes into a zero-initialized u32 before writing the\nfinal word so only valid bytes are read from the input buffer.",
  "id": "GHSA-f682-7h79-jmqf",
  "modified": "2026-09-14T15:32:35Z",
  "published": "2026-09-11T21:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89730"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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