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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 5e85a04c8c0d271d7561a770b85741f186398868, < 4f257e2eba419ab4cd880c822346450e4e7b2af3; >= 5e85a04c8c0d271d7561a770b85741f186398868, < d3b6c28a71f111a6c67ddc3238aab95910fd86cf; >= 5e85a04c8c0d271d7561a770b85741f186398868, < ba75be6f0d9d028d20852564206565a4c03e3288; >= 5e85a04c8c0d271d7561a770b85741f186398868, < e75a324409715bd71348f79a49aa61b69dbeb676; >= 5e85a04c8c0d271d7561a770b85741f186398868, < 5f125507d2270035dfcf83fbff6cff5a143e200c; >= 5e85a04c8c0d271d7561a770b85741f186398868, < 0384e87e3fec735e47f1c133c796f32ef7a72a9b |
| Linux | Linux | 4.19 |
References
- https://git.kernel.org/stable/c/0384e87e3fec735e47f1c133c796f32ef7a72a9bPatch
- https://git.kernel.org/stable/c/4f257e2eba419ab4cd880c822346450e4e7b2af3Patch
- https://git.kernel.org/stable/c/5f125507d2270035dfcf83fbff6cff5a143e200cPatch
- https://git.kernel.org/stable/c/ba75be6f0d9d028d20852564206565a4c03e3288Patch
- https://git.kernel.org/stable/c/d3b6c28a71f111a6c67ddc3238aab95910fd86cfPatch
- https://git.kernel.org/stable/c/e75a324409715bd71348f79a49aa61b69dbeb676Patch
Timeline
- Published
- Sep 15, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Analyzed