Lifetime support for Linux 5.4 and 4.19 LTS kernels maintained by Greg Kroah-Hartman () and Sasha Levin (Sasha Levin), until December 2025 and 2024 respectively. The Linux 4.19 kernel is used in Debian 10, Google as the basis for the basic Android Universal Kernel and ships in the Android 10 platform, while the 5.4 kernel is used in Ubuntu 20.04 LTS.
Thus, as in the case of kernels 3.16, 4.9, 4.4 and 4.14, branches 5.4 and 4.19 will be supported for 6 years. Initially, these cores were planned to be supported for 2 years (until December 2020 and 2021). Support for the Linux 3.16 kernel, released in August 2014, ends in June 2020. Kernel 4.14 will be supported until January 2024, 4.9 until January 2023, and 4.4 until February 2022. For normal non-LTS kernel releases, updates are released only until the next stable branch is released (for example, updates for the 5.6 branch were released before 5.7).
Separately based on kernels 4.4 and 4.19 by the Linux Foundation branch (Super Long Term Support), which are accompanied separately and will be supported for 10-20 years. SLTS branches are maintained by the Civil Infrastructure Platform (CIP) project, which involves companies such as Toshiba, Siemens, Renesas, Hitachi, and MOXA, as well as the main kernel LTS branch maintainers, the Debian developers, and the creators of the KernelCI project. SLTS cores are targeted at civil infrastructure technical systems and critical industrial systems.
Source: opennet.ru