CVE-2022-50246

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

MEDIUM

5.5

CVSS Score

Published: September 15, 2025 at 02:02 PM UTC

Updated: June 17, 2026 at 05:23 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.19 ≤ v < 5.10.1634.19 ≤ v < 5.15.864.19 ≤ v < 5.4.2294.19 ≤ v < 6.0.164.19 ≤ v < 6.1.24.19 ≤ v < 6.25.11 ≤ v < 5.15.865.16 ≤ v < 6.0.165.5 ≤ v < 5.10.1636.1 ≤ v < 6.1.24.195e85a04c8c0d271d7561a770b85741f186398868

Vendor states this is fixed in 0384e87e3fec735e47f1c133c796f32ef7a72a9b (fixed)

Vendor states this is fixed in 4f257e2eba419ab4cd880c822346450e4e7b2af3 (fixed)

Vendor states this is fixed in 5f125507d2270035dfcf83fbff6cff5a143e200c (fixed)

Vendor states this is fixed in ba75be6f0d9d028d20852564206565a4c03e3288 (fixed)

Vendor states this is fixed in d3b6c28a71f111a6c67ddc3238aab95910fd86cf (fixed)

Vendor states this is fixed in e75a324409715bd71348f79a49aa61b69dbeb676 (fixed)

Vendor states this is fixed in 4.19 (unaffected)

Vendor states this is fixed in 5.10.163 (unaffected)

Vendor states this is fixed in 5.15.86 (unaffected)

Vendor states this is fixed in 5.4.229 (unaffected)

Vendor states this is fixed in 6.0.16 (unaffected)

Vendor states this is fixed in 6.1.2 (unaffected)