CVE-2017-8421: Unbounded Memory Allocation in ELF Relocation Section Parsing

Processing specially crafted ELF files with objdump causes unbounded memory allocation. The vulnerability exists in how ELF section metadata is parsed, specifically in relocation section header validation. A malicious ELF file with extremely large sh_size and small sh_entsize values in relocation section headers causes the reloc_count to be computed as a huge value without bounds checking, leading to massive memory allocation attempts.