Only coreutils 5 is affected. We don't build factor in coreutils 6 and coreutils 8.32 does not use pregenerated headers in its implementation of factor.
This should include a fix for S_ISUID that we "lost" when switching away from mes-m2's libc. See http://git.savannah.gnu.org/cgit/mes.git/commit/?id=ce54ccc2c04b0a6ec9105522e4b8b4cc278c5106