ghsa-6j5m-wpm9-j86c
Vulnerability from github
Published
2025-09-16 18:31
Modified
2025-09-16 18:31
Details

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

scsi: mpi3mr: Fix issues in mpi3mr_get_all_tgt_info()

The function mpi3mr_get_all_tgt_info() has four issues:

1) It calculates valid entry length in alltgt_info assuming the header part of the struct mpi3mr_device_map_info would equal to sizeof(u32). The correct size is sizeof(u64).

2) When it calculates the valid entry length kern_entrylen, it excludes one entry by subtracting 1 from num_devices.

3) It copies num_device by calling memcpy(). Substitution is enough.

4) It does not specify the calculated length to sg_copy_from_buffer(). Instead, it specifies the payload length which is larger than the alltgt_info size. It causes "BUG: KASAN: slab-out-of-bounds".

Fix the issues by using the correct header size, removing the subtraction from num_devices, replacing the memcpy() with substitution and specifying the correct length to sg_copy_from_buffer().

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53320"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T17:15:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpi3mr: Fix issues in mpi3mr_get_all_tgt_info()\n\nThe function mpi3mr_get_all_tgt_info() has four issues:\n\n1) It calculates valid entry length in alltgt_info assuming the header part\n   of the struct mpi3mr_device_map_info would equal to sizeof(u32).  The\n   correct size is sizeof(u64).\n\n2) When it calculates the valid entry length kern_entrylen, it excludes one\n   entry by subtracting 1 from num_devices.\n\n3) It copies num_device by calling memcpy(). Substitution is enough.\n\n4) It does not specify the calculated length to sg_copy_from_buffer().\n   Instead, it specifies the payload length which is larger than the\n   alltgt_info size. It causes \"BUG: KASAN: slab-out-of-bounds\".\n\nFix the issues by using the correct header size, removing the subtraction\nfrom num_devices, replacing the memcpy() with substitution and specifying\nthe correct length to sg_copy_from_buffer().",
  "id": "GHSA-6j5m-wpm9-j86c",
  "modified": "2025-09-16T18:31:27Z",
  "published": "2025-09-16T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53320"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f3d3fa5b8ed7d3b147478f42b00b468eeb1ecd2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ba997b22f2cd5d29aad8c39f6201f7608ed0c04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb428a2005fc1260d18b989cc5199f281617f44d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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