ghsa-7p7v-h84h-xmw3
Vulnerability from github
Published
2025-07-10 09:32
Modified
2025-07-10 09:32
Details

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

fpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt()

fpga_mgr_test_img_load_sgt() allocates memory for sgt using kunit_kzalloc() however it does not check if the allocation failed. It then passes sgt to sg_alloc_table(), which passes it to __sg_alloc_table(). This function calls memset() on sgt in an attempt to zero it out. If the allocation fails then sgt will be NULL and the memset will trigger a NULL pointer dereference.

Fix this by checking the allocation with KUNIT_ASSERT_NOT_ERR_OR_NULL().

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38274"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-10T08:15:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt()\n\nfpga_mgr_test_img_load_sgt() allocates memory for sgt using\nkunit_kzalloc() however it does not check if the allocation failed.\nIt then passes sgt to sg_alloc_table(), which passes it to\n__sg_alloc_table(). This function calls memset() on sgt in an attempt to\nzero it out. If the allocation fails then sgt will be NULL and the\nmemset will trigger a NULL pointer dereference.\n\nFix this by checking the allocation with KUNIT_ASSERT_NOT_ERR_OR_NULL().",
  "id": "GHSA-7p7v-h84h-xmw3",
  "modified": "2025-07-10T09:32:28Z",
  "published": "2025-07-10T09:32:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38274"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ebf1982038af12f3588417e4fd0417d2551da28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b2230ac7ff0aeb2441132df638a82ab124f8624"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e69e2cfd8b38d9463a250e153ef4963a604d61e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb4c74eaa6e2d15f3bbd32941c9d2a25b29a718d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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