Moving to later versions of glibc need not cause any such problems.
Nothing that depends on the older version needs to be recompiled, because the glibc ABI is enforcedly stable. Glibc uses ELF versioning to preserve old interfaces and semantics -- although they don't necessarily preserve old bugs that result in undocumented behavior.
That's to the good, because the programs get unexpected fixes, and only programs that depended on undocumented behavior get new problems. I.e. the ripple effect peters out fast.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds