binutils: CVE-2017-12451

binutils: CVE-2017-12451

Source: git://sourceware.org/git/binutils-gdb.git
MR: 73840
Type: Security Fix
Disposition: Backport from binutils-2_29-branch
ChangeID: 582c686f18c059d665189a6a09df3a8cc4a3b093
Description:

Fix address violation when attempting to read a corrupt field in a COFF archive header structure.

PR 21786
* coff-rs6000.c (_bfd_strntol): New function.
  (_bfd_strntoll): New function.
  (GET_VALUE_IN_FIELD): New macro.
  (EQ_VALUE_IN_FIELD): new macro.
  (_bfd_xcoff_slurp_armap): Use new macros.
  (_bfd_xcoff_archive_p): Likewise.
  (_bfd_xcoff_read_ar_hdr): Likewise.
  (_bfd_xcoff_openr_next_archived_file): Likewise.
  (_bfd_xcoff_stat_arch_elt): Likewise.

Extend previous fix to coff-rs6000.c to coff64-rs6000.c

PR 21786
* coff64-rs6000.c (_bfd_strntol): New function.
  (_bfd_strntoll): New function.
  (GET_VALUE_IN_FIELD): New macro.
  (xcoff64_slurp_armap): Use new macros.

Affects: <= 2.29
Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
Reviewed-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>