CVE-2022-50246

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

State: Published
Severity: Not scored
Published: Sep 15, 2025
Updated: May 11, 2026
Reserved: Sep 15, 2025

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5e85a04c8c0d271d7561a770b85741f186398868 to before 4f257e2eba419ab4cd880c822346450e4e7b2af3Affected 5e85a04c8c0d271d7561a770b85741f186398868 to before d3b6c28a71f111a6c67ddc3238aab95910fd86cfAffected 5e85a04c8c0d271d7561a770b85741f186398868 to before ba75be6f0d9d028d20852564206565a4c03e3288Affected 5e85a04c8c0d271d7561a770b85741f186398868 to before e75a324409715bd71348f79a49aa61b69dbeb676Affected 5e85a04c8c0d271d7561a770b85741f186398868 to before 5f125507d2270035dfcf83fbff6cff5a143e200cAffected 5e85a04c8c0d271d7561a770b85741f186398868 to before 0384e87e3fec735e47f1c133c796f32ef7a72a9bAffected
LinuxLinux	4.19Affected before 4.19Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.86 through 5.15.Not affected 6.0.16 through 6.0.Not affected 6.1.2 through 6.1.*Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

5e85a04c8c0d271d7561a770b85741f186398868 to before 4f257e2eba419ab4cd880c822346450e4e7b2af3Affected
5e85a04c8c0d271d7561a770b85741f186398868 to before d3b6c28a71f111a6c67ddc3238aab95910fd86cfAffected
5e85a04c8c0d271d7561a770b85741f186398868 to before ba75be6f0d9d028d20852564206565a4c03e3288Affected
5e85a04c8c0d271d7561a770b85741f186398868 to before e75a324409715bd71348f79a49aa61b69dbeb676Affected
5e85a04c8c0d271d7561a770b85741f186398868 to before 5f125507d2270035dfcf83fbff6cff5a143e200cAffected
5e85a04c8c0d271d7561a770b85741f186398868 to before 0384e87e3fec735e47f1c133c796f32ef7a72a9bAffected

LinuxLinux

4.19Affected
before 4.19Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.86 through 5.15.*Not affected
6.0.16 through 6.0.*Not affected
6.1.2 through 6.1.*Not affected
6.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.