A researcher discovered a critical Linux vulnerability, tracked as CVE-2019-17666, that could be exploited to fully compromise vulnerable machines. The vulnerability is a heap buffer overflow issue that resides in the rtlwifi driver that allows certain Realtek Wi-Fi modules to communicate with the Linux operating system. The flaw affects Linux versions through 5.3.6, according to the researchers the issue exists at least since 2015. The Linux kernel team has already developed a fix that is currently under revision, it has not yet been included into the Linux kernel.”]
Source: https://securityaffairs.co/wordpress/92700/hacking/linux-wi-fi-bug.html