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GHSA-46J9-HJXG-9FF5

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32
VLAI
Details

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

fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()

mpf_ops_parse_header() reads header_size from the bitstream at MPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression *(buf + header_size - 1) reads one byte before the buffer start.

Since initial_header_size is set to 71 in mpf_ops, the fpga-mgr core guarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET. The only real gap is the zero header_size case, which cannot be resolved by providing a larger buffer, so return -EINVAL.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72156"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:33Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()\n\nmpf_ops_parse_header() reads header_size from the bitstream at\nMPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression\n*(buf + header_size - 1) reads one byte before the buffer start.\n\nSince initial_header_size is set to 71 in mpf_ops, the fpga-mgr core\nguarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET.\nThe only real gap is the zero header_size case, which cannot be\nresolved by providing a larger buffer, so return -EINVAL.",
  "id": "GHSA-46j9-hjxg-9ff5",
  "modified": "2026-08-15T06:32:14Z",
  "published": "2026-08-15T06:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72156"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d3766fecd9b2db39a18b48021c15c522997ec25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3da8eaf5469eda2353b72038d644fabddb848ce1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43a1974da6bc7ce8f4d1dc1d03d56997428c29c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e45ec24d8e986d79a8e07f49a816c414ad283622"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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