In the coff_pointerize_aux function in coffgen.c in the Binary File
Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30,
an index is not validated, which allows remote attackers to cause a denial
of service (segmentation fault) or possibly have unspecified other impact
via a crafted file, as demonstrated by objcopy of a COFF object.