binutils: Improper bounds check in coffgen.c:coff_pointerize_aux() allows for denial of service when parsing a crafted COFF file

In the coffpointerizeaux 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 crafte...