{"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:\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 …","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","slug":"CVE-2022-50246","body":"## Overview\n\nIn 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 'fwnode' 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.\n\n## Affected\n\n- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < 4f257e2eba419ab4cd880c822346450e4e7b2af3`\n- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < d3b6c28a71f111a6c67ddc3238aab95910fd86cf`\n- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < ba75be6f0d9d028d20852564206565a4c03e3288`\n- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < e75a324409715bd71348f79a49aa61b69dbeb676`\n- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < 5f125507d2270035dfcf83fbff6cff5a143e200c`\n- `Linux >= 5e85a04c8c0d271d7561a770b85741f186398868 < 0384e87e3fec735e47f1c133c796f32ef7a72a9b`\n- `Linux 4.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}