Linux kernel 3.12.62 LTS is a modest update, and looking at the diff from the previous maintenance release, version 3.12.61, we can notice that it changes a total of 96 files, with 1213 insertions and 1053 deletions. Among the changes, we can notice lots of fixes for the SPARC hardware architecture, but there are various other improvements for the ARM, MIPS, PA-RISC, and x86 instruction set architectures.
Additionally, there are multiple updated drivers implemented in the Linux 3.12.62 LTS kernel, in particular for crypto, EDAC, InfiniBand, Macintosh, HID, networking (Ethernet Atheros and QLogic, Virtual Extensible LAN (VXLAN), and mac80211), PCI, SCSI, and USB. The UBIFS (Unsorted Block Image File System), Network File System (NFS), and eCryptfs filesystems have also received some minor improvements.