Linux Kernel USB isp116x Memory Leak Vulnerability

A memory leak vulnerability has been identified in the Linux kernel's USB isp116x driver. The issue arises when the debugfs_lookup() function is called; the resulting reference must be released with dput() to prevent memory leakage. Failure to do so can lead to a gradual increase in memory usage over time. The vulnerability has been addressed by modifying the code to use debugfs_lookup_and_remove(), which automatically manages the reference correctly. This fix is applicable to the Linux kernel stable tree.

Impact

Exploitation of this vulnerability leads to a memory leak, where allocated memory is not properly released, potentially causing increased memory usage over time.