CVE-2026-93273

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

regulator: tps6594: Fix device node reference leaks in multiphase loop

In tps6594_regulator_probe(), the multi-phase configuration loop calls

of_find_node_by_name() to find buck nodes by name, and of_get_parent()

twice to navigate to the PMIC parent node. None of the acquired node

references (np, intermediate parent, np_pmic_parent) are ever released

via of_node_put(), causing a reference leak on every loop iteration.

Additionally, of_find_node_by_name() can return NULL, but the result was

immediately passed to of_node_full_name() and of_get_parent() without a

NULL check, which could lead to a NULL pointer dereference.

Fix this by:

- Adding a NULL check for np after of_find_node_by_name()

- Storing the intermediate parent node in a local variable np_parent

- Calling of_node_put() on np, np_parent and np_pmic_parent at the

end of each loop iteration

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References