GHSA-48RC-GF37-67XR

Vulnerability from github – Published: 2025-09-15 15:31 – Updated: 2025-11-24 21:30
VLAI?
Details

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

usb: typec: tcpci: fix of node refcount leak in tcpci_register_port()

I got the following report while doing device(mt6370-tcpc) load test with CONFIG_OF_UNITTEST and CONFIG_OF_DYNAMIC enabled:

OF: ERROR: memory leak, expected refcount 1 instead of 2, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /i2c/pmic@34/tcpc/connector

The 'fwnode' set in tcpci_parse_config() which is called in tcpci_register_port(), its node refcount is increased in device_get_named_child_node(). It needs be put while exiting, so call fwnode_handle_put() in the error path of tcpci_register_port() and in tcpci_unregister_port() to avoid leak.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2022-50246"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T14:15:35Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpci: fix of node refcount leak in tcpci_register_port()\n\nI got the following report while doing device(mt6370-tcpc) load\ntest with CONFIG_OF_UNITTEST and CONFIG_OF_DYNAMIC enabled:\n\n  OF: ERROR: memory leak, expected refcount 1 instead of 2,\n  of_node_get()/of_node_put() unbalanced - destroy cset entry:\n  attach overlay node /i2c/pmic@34/tcpc/connector\n\nThe \u0027fwnode\u0027 set in tcpci_parse_config() which is called\nin tcpci_register_port(), its node refcount is increased\nin device_get_named_child_node(). It needs be put while\nexiting, so call fwnode_handle_put() in the error path of\ntcpci_register_port() and in tcpci_unregister_port() to\navoid leak.",
  "id": "GHSA-48rc-gf37-67xr",
  "modified": "2025-11-24T21:30:56Z",
  "published": "2025-09-15T15:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50246"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0384e87e3fec735e47f1c133c796f32ef7a72a9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f257e2eba419ab4cd880c822346450e4e7b2af3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f125507d2270035dfcf83fbff6cff5a143e200c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba75be6f0d9d028d20852564206565a4c03e3288"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3b6c28a71f111a6c67ddc3238aab95910fd86cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e75a324409715bd71348f79a49aa61b69dbeb676"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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