---
id: CVE-2022-50246
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 …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 <
    4f257e2eba419ab4cd880c822346450e4e7b2af3
  - >-
    Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 <
    d3b6c28a71f111a6c67ddc3238aab95910fd86cf
  - >-
    Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 <
    ba75be6f0d9d028d20852564206565a4c03e3288
  - >-
    Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 <
    e75a324409715bd71348f79a49aa61b69dbeb676
  - >-
    Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 <
    5f125507d2270035dfcf83fbff6cff5a143e200c
  - >-
    Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 <
    0384e87e3fec735e47f1c133c796f32ef7a72a9b
  - Linux 4.19
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:07:43.565436Z'
published: '2025-09-15'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:10:30.746Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-50246'
references:
  - url: 'https://git.kernel.org/stable/c/4f257e2eba419ab4cd880c822346450e4e7b2af3'
  - url: 'https://git.kernel.org/stable/c/d3b6c28a71f111a6c67ddc3238aab95910fd86cf'
  - url: 'https://git.kernel.org/stable/c/ba75be6f0d9d028d20852564206565a4c03e3288'
  - url: 'https://git.kernel.org/stable/c/e75a324409715bd71348f79a49aa61b69dbeb676'
  - url: 'https://git.kernel.org/stable/c/5f125507d2270035dfcf83fbff6cff5a143e200c'
  - url: 'https://git.kernel.org/stable/c/0384e87e3fec735e47f1c133c796f32ef7a72a9b'
tags:
  - cve.org
epss: 0.0016
epssPercentile: 0.05159
ingestedAt: '2026-11-05T22:38:31.710Z'
---

## Overview

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.

## Affected

- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < 4f257e2eba419ab4cd880c822346450e4e7b2af3`
- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < d3b6c28a71f111a6c67ddc3238aab95910fd86cf`
- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < ba75be6f0d9d028d20852564206565a4c03e3288`
- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < e75a324409715bd71348f79a49aa61b69dbeb676`
- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < 5f125507d2270035dfcf83fbff6cff5a143e200c`
- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < 0384e87e3fec735e47f1c133c796f32ef7a72a9b`
- `Linux 4.19`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.