Google released its security patches for Android in 2019 that addressed tens of vulnerabilities in the popular mobile OS. The most severe of them is the CVE-2018-9583 issue, a critical remote code execution vulnerability affecting the System. The 2019-01-05 security patch level addressed a total of 14 vulnerabilities in Kernel components (7), Qualcomm components (3), and Qualcomm closed-source components (1), and NVIDIA parts (3) Google addressed only one flaw in Framework, tracked as a High severity and affects Android versions 8.0, 8.1, and 9.1.”]
Source: https://securityaffairs.co/wordpress/79690/mobile-2/security-patches-android-2018.html