GHSA-3W8Q-VG6G-CG46

Vulnerability from github – Published: 2025-12-09 03:31 – Updated: 2025-12-09 03:31
VLAI?
Details

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

crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()

During NVMeTCP Authentication a controller can trigger a kernel oops by specifying the 8192 bit Diffie Hellman group and passing a correctly sized, but zeroed Diffie Hellamn value. mpi_cmp_ui() was detecting this if the second parameter was 0, but 1 is passed from dh_is_pubkey_valid(). This causes the null pointer u->d to be dereferenced towards the end of mpi_cmp_ui()

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53817"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-09T01:16:53Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u-\u003ed to be dereferenced towards the end of mpi_cmp_ui()",
  "id": "GHSA-3w8q-vg6g-cg46",
  "modified": "2025-12-09T03:31:12Z",
  "published": "2025-12-09T03:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53817"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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