CVE-2026-93273

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxf17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 < 28f70e0aa767a8f022c70ed75ecef227dc668121affected
LinuxLinuxf17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 < 4a672bff99f6b58dde419fd12b3a53da137f032daffected
LinuxLinuxf17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 < 68ce4f8223b78f8616ec7f4a02c38988eae627d2affected
LinuxLinuxf17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 < fceac25487b21d6db940d2aed368e465d89cd1f4affected
LinuxLinuxf17ccc5deb4d024bb52fd3433471e77ab7ae9ad8 < 7fd28093b3effc4f92566466df364622830ec608affected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References