This is a bit unexpected because there’s been only three days since the Linux 4.9.12 and 4.4.51 LTS kernels have been released, so you can imagine that the changes implemented in today’s Linux kernel 4.9.13, which was finally marked as longterm on kernel.org, and Linux kernel 4.4.52 LTS point are kept a minimum. According to their appended shortlogs, a total of 31 files were changed in Linux 4.9.13 LTS, with 365 insertions and 122 deletions, and 24 files in Linux 4.4.52 LTS, with 218 insertions and 121 deletions. Both Linux 4.9.13 and 4.4.52 LTS kernels include a bunch of updated USB (ark3116, cp210x, mos7840, spcp8x5, opticon, and ftdi_sio), networking (Realtek rtlwifi, Mellanox mlx5 Ethernet), RTC and TTY drivers. A couple of small fixes have been implemented for the x86 architecture and XFS file system, and the networking stack was updated with various Datagram Congestion Control Protocol (DCCP), IrDA (Infrared Data Association), kernel connection multiplexer (KCM), Logical Link Control (LLC), and Netfilter improvements.