xyzyx First, glibc does not have a "lib" prefix; it's simply glibc.
Subsequently, it seems that several key versions of glibc-like dependencies in popular domestic Linux distributions were quite low. This was reportedly due to the Ministry of Industry and Information Technology prioritizing these specific versions for its "trustworthy" certification (perhaps because older versions had better ARM support and were less compatible with other instruction sets?).
However, specifically for JTDX, it's possible that the issue arose because the toolchain used during package building was a new version of glibc, which automatically imported the symbols from the new glibc. Recompiling might then resolve the problem.