Linux Kernel HID Hyper-V Mouse Driver Memory Leak Vulnerability

A memory leak vulnerability has been identified in the Linux kernel's Hyper-V mouse driver. The issue arises in the 'mousevsc_probe()' function, where the 'hid_add_device()' call can return an error. In such cases, the function fails to properly release the 'hid_dev' resource, which is allocated during the device initialization process. This oversight can lead to a memory leak by not freeing the allocated resources when an error occurs.

Impact

Exploitation of this vulnerability can lead to a memory leak, causing increased memory usage and potentially leading to memory exhaustion over time.