CVE-2022-50246 (GCVE-0-2022-50246)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:02 – Updated: 2025-09-15 14:02
VLAI?
Title
usb: typec: tcpci: fix of node refcount leak in tcpci_register_port()
Summary
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5e85a04c8c0d271d7561a770b85741f186398868 , < 4f257e2eba419ab4cd880c822346450e4e7b2af3 (git)
Affected: 5e85a04c8c0d271d7561a770b85741f186398868 , < d3b6c28a71f111a6c67ddc3238aab95910fd86cf (git)
Affected: 5e85a04c8c0d271d7561a770b85741f186398868 , < ba75be6f0d9d028d20852564206565a4c03e3288 (git)
Affected: 5e85a04c8c0d271d7561a770b85741f186398868 , < e75a324409715bd71348f79a49aa61b69dbeb676 (git)
Affected: 5e85a04c8c0d271d7561a770b85741f186398868 , < 5f125507d2270035dfcf83fbff6cff5a143e200c (git)
Affected: 5e85a04c8c0d271d7561a770b85741f186398868 , < 0384e87e3fec735e47f1c133c796f32ef7a72a9b (git)
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    Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/usb/typec/tcpm/tcpci.c"
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          "programFiles": [
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          "vendor": "Linux",
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:02:04.841Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/4f257e2eba419ab4cd880c822346450e4e7b2af3"
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        {
          "url": "https://git.kernel.org/stable/c/d3b6c28a71f111a6c67ddc3238aab95910fd86cf"
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        {
          "url": "https://git.kernel.org/stable/c/0384e87e3fec735e47f1c133c796f32ef7a72a9b"
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      ],
      "title": "usb: typec: tcpci: fix of node refcount leak in tcpci_register_port()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50246",
    "datePublished": "2025-09-15T14:02:04.841Z",
    "dateReserved": "2025-09-15T13:58:00.972Z",
    "dateUpdated": "2025-09-15T14:02:04.841Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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