{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-38027",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-38027"
  ],
  "published": "2025-06-18T09:29:20Z",
  "summary": "regulator: max20086: fix invalid memory access",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: max20086: fix invalid memory access\n\nmax20086_parse_regulators_dt() calls of_regulator_match() using an\narray of struct of_regulator_match allocated on the stack for the\nmatches argument.\n\nof_regulator_match() calls devm_of_regulator_put_matches(), which calls\ndevres_alloc() to allocate a struct devm_of_regulator_matches which will\nbe de-allocated using devm_of_regulator_put_matches().\n\nstruct devm_of_regulator_matches is populated with the stack allocated\nmatches array.\n\nIf the device fails to probe, devm_of_regulator_put_matches() will be\ncalled and will try to call of_node_put() on that stack pointer,\ngenerating the following dmesg entries:\n\nmax20086 6-0028: Failed to read DEVICE_ID reg: -121\nkobject: '\\xc0$\\xa5\\x03' (000000002cebcb7a): is not initialized, yet\nkobject_put() is being called.\n\nFollowed by a stack trace matching the call flow described above.\n\nSwitch to allocating the matches array using devm_kcalloc() to\navoid accessing the stack pointer long after it's out of scope.\n\nThis also has the advantage of allowing multiple max20086 to probe\nwithout overriding the data stored inside the global of_regulator_match.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.140",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-38027"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6ba30f7aa2c550b2ac04f16b81a19a8c045b8660"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7bddac8603d4e396872c2fbf4403ec08e7b1d7c8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d2a9a92bb4cc7568cff68241b0051dc7268bdc68"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5578ab04bd7732f470fc614bbc0a924900399fb8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6b0cd72757c69bc2d45da42b41023e288d02e772"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}