This update for glibc fixes the following issues: Security issues fixed: - CVE-2019-9169: Fixed a heap-based buffer over-read via an attempted case-insensitive regular-expression match . - CVE-2009-5155: Fixed a denial of service in parse_reg_exp . Non-security issues fixed: - Does no longer compress debug sections in crt*.o files - Fixes a concurrency problem in ldconfig - Fixes a race condition in pthread_mutex_lock while promoting to PTHREAD_MUTEX_ELISION_NP