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CVE-2026-93273

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

Description (CNA)

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

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected f17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 before 28f70e0aa767a8f022c70ed75ecef227dc668121; affected f17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 before 4a672bff99f6b58dde419fd12b3a53da137f032d; affected f17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 before 68ce4f8223b78f8616ec7f4a02c38988eae627d2; affected f17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 before fceac25487b21d6db940d2aed368e465d89cd1f4; affected f17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 before 7fd28093b3effc4f92566466df364622830ec608
Linux / Linuxaffected 6.5; unaffected 0 before 6.5; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References