CVE-2026-59139 Data::ReqRep::Shared versions before 0.05 for Perl allow an out-of-bounds read via an unvalidated arena offset and length in reqrep_recv_locked

Data::ReqRep::Shared versions before 0.05 for Perl allow an out-of-bounds read via an unvalidated arena offset and length in reqreprecvlocked. The attach-time validator reqrepvalidateheader checks the header scalars and region layout against the file size, but does not validate the array contents...