glibc: Non-progress DoS in EUC_JISX0213 -> UCS-4 conversion state

A flaw was found in glibc. Converting crafted EUCJISX0213 input to UCS-4 or the internal wide character encoding for example with iconv can cause the converter to make no progress, hanging the calling application. Some EUCJISX0213 sequences decode to two code points; if the output buffer has room...