Hi, we found an out of bound write in libdwarf -20151114.
we run it with valgrind , the result as follows: ============================================ $ valgrind ./dwarfdump -ka aw.elf ==5358== Memcheck, a memory error detector ==5358== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al. ==5358== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info ==5358== Command: ../../llvm-codes/dwarf-20151114/dwarfdump/dwarfdump -ka aw.elf ==5358== ==5358== Invalid write of size 8 ==5358== at 0x40DA25: get_abbrev_array_info (in /home/xqx/test/libdwarf-test/llvm-codes/dwarf-20151114/dwarfdump/dwarfdump) ==5358== by 0x40FD92: print_one_die_section (in /home/xqx/test/libdwarf-test/llvm-codes/dwarf-20151114/dwarfdump/dwarfdump) ==5358== by 0x40ED22: print_infos (in /home/xqx/test/libdwarf-test/llvm-codes/dwarf-20151114/dwarfdump/dwarfdump) ==5358== by 0x4050DE: process_one_file (in /home/xqx/test/libdwarf-test/llvm-codes/dwarf-20151114/dwarfdump/dwarfdump) ==5358== by 0x403C1B: main (in /home/xqx/test/libdwarf-test/llvm-codes/dwarf-20151114/dwarfdump/dwarfdump) ==5358== Address 0x541fc00 is 18,352 bytes inside an unallocated block of size 4,156,304 in arena "client" ==5358== please see the attachment for the bug elf.
aw.elf
Description: Binary data
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