Updated glibc packages fix security vulnerabilities:
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).
A privilege escalation bug in the realpath() function when the getcwd() system call doesn't return a valid absolute pathname (CVE-2018-1000001).
Also, support for the C.UTF-8 locale has been added in the locales package.