The Linux kernel contained a vulnerability in the regulator core subsystem where, if late enabling of a supply regulator failed in regulator_resolve_supply(), the code triggered a lockdep warning due to improper locking. Specifically, the regulator_list_mutex was not held when calling _regulator_put(), violating locking requirements. The fix replaced _regulator_put() with regulator_put() and added locking to prevent concurrent access to the regulator device (rdev) while clearing the supply pointer. This correction prevents potential race conditions and ensures proper locking discipline in the error path. The vulnerable code is planned for removal in a future commit, but the fix was applied beforehand for stability and reference.

This vulnerability does not affect confidentiality or integrity but impacts availability by causing potential denial of service through kernel warnings and possible deadlocks or race conditions in the regulator subsystem. There are no known exploits in the wild. The issue is limited to local attackers with low privileges due to the local attack vector and requires user-level privileges to trigger.

No official patch links are provided in the data, but the vulnerability has been resolved in the Linux kernel source by replacing unsafe locking calls and adding proper locking mechanisms. Users should update to the latest Linux kernel versions that include this fix once available. Since this is not a cloud service, remediation depends on applying kernel updates from the vendor or distribution. Patch status is not yet confirmed in this data; check the vendor advisory for current remediation guidance.