Security update for glibc (important)

This update for glibc fixes the following issues:

• CVE-2017-1000366: Fix a potential privilege escalation vulnerability
  that allowed unprivileged system users to manipulate the stack of setuid
  binaries to gain special privileges. [bsc#1039357]

• The incorrectly defined constant O_TMPFILE has been fixed. [bsc#1038690]

• A defect in glibc’s regression test suite has been remedied to avoid
  false positives. [bsc#987216]