The Linux kernel's SCMI regulator driver contained a reference count leak in the scmi_regulator_probe() function. Specifically, when process_scmi_regulator_of_node() fails, the function returns without calling of_node_put() on the device node obtained by of_find_node_by_name(), resulting in a leaked reference. This leak was addressed by adding the missing of_node_put() call on the error path to properly release the reference count and prevent resource leakage.

The vulnerability causes a reference count leak in the kernel's device tree node handling, which can lead to resource exhaustion or instability over time. There is no indication of direct code execution or privilege escalation from this issue. No known exploits are reported in the wild.

A fix has been applied to the Linux kernel source code to add the missing of_node_put() call on the error path in scmi_regulator_probe(). Users should update to a kernel version that includes this fix once it is released. Patch status is not explicitly confirmed; check the vendor or kernel mailing list advisories for the official fixed version and apply updates accordingly.