Linux Kernel Firmware Loader Memory Leak Vulnerability

A memory leak vulnerability has been addressed in the Linux kernel's firmware loader component. During the firmware upload process, an instance of the 'fw_upload' structure is allocated but not properly freed, leading to a memory leak. The vulnerability arises because the allocated data needs to be released in the 'fw_dev_release()' function. To resolve this issue, a new 'fw_upload_free()' function has been created in 'sysfs_upload.c' to manage the specific memory deallocation for firmware uploads, incorporating the necessary 'kfree' call for the 'fw_upload' structure.

Impact

Exploitation of this vulnerability could lead to a memory leak, causing increased memory usage and potentially leading to a denial-of-service condition.