Security update for glibc (important)

This update for glibc fixes the following issues:

• A privilege escalation bug in the realpath() function has been fixed.
  [CVE-2018-1000001, bsc#1074293]

• A memory leak and a buffer overflow in the dynamic ELF loader has been
  fixed. [CVE-2017-1000408, CVE-2017-1000409, bsc#1071319]

• An issue in the code handling RPATHs was fixed that could have been
  exploited by an attacker to execute code loaded from arbitrary
  libraries. [CVE-2017-16997, bsc#1073231]

• A potential crash caused by a use-after-free bug in pthread_create() has
  been fixed. [bsc#1053188]

• A bug that prevented users to build shared objects which use the
  optimized libmvec.so API has been fixed. [bsc#1070905]

• A memory leak in the glob() function has been fixed. [CVE-2017-15670,
  CVE-2017-15671, CVE-2017-15804, bsc#1064569, bsc#1064580, bsc#1064583]

• A bug that would lose the syscall error code value in case of crashes
  has been fixed. [bsc#1063675]

This update was imported from the SUSE:SLE-12-SP2:Update update project.