SUSE-SU-2019:13989-1

This update for grub2 fixes the following issues:

Security issue fixed:

• CVE-2017-9763: Fixed a memory leak in grub_ext2_read_block (bsc#1045063)

Other issues addressed:

• Added support for tftp block counter roll-over and backported support for efinetSNP open (bsc#1124662).