glibc

glibc 2.35 shipping with a broken dependency sorter causes valgrind errors, assert aborts, library loading failures, and segfaults in the lowest-level system component (ld.so), requiring developers to debug and implement workarounds.

Linux ELF binaries don't track which symbols are imported from which modules (unlike Windows PE32), causing process-global symbols that create massive nightmares for forwards and backwards compatibility when shipping applications.