The kernel failure causes UCSI instances to leave their per‑instance debugfs entries in place when ucsi_unregister() is called. The register routine creates new directories, but the unregister path does not remove them until ucsi_destroy() is invoked, resulting in duplicate directory attempts and kernel log messages stating "debugfs: '…' already exists".

All Linux kernel builds released before the bug‑fix commit are affected. Any distribution that has not applied the corresponding kernel patch inherits the flaw. Drivers that register and unregister the same UCSI instance during remoteproc restarts, such as ucsi_glink, are likely to trigger the problem.

The CVSS score of 5.5 indicates moderate severity, while the EPSS score of less than 1% and the absence from the CISA KEV catalog show that exploitation is highly unlikely. The issue manifests as a resource‑management problem that does not expose user data, compromise confidentiality or integrity, nor provide an attack vector.