commit 04b31182bf3f8a1a76e995bdfaaaab4c009b9cb2 Author: Nick Clifton Date: Wed Apr 26 16:30:22 2017 +0100 Fix a seg-fault when processing a corrupt binary containing reloc(s) with negative addresses. PR binutils/21434 * reloc.c (bfd_perform_relocation): Check for a negative address in the reloc. Upstream-Status: Backport CVE: CVE-2017-8397 Signed-off-by: Thiruvadi Rajaraman Index: git/bfd/reloc.c =================================================================== --- git.orig/bfd/reloc.c 2017-09-04 18:06:00.651987605 +0530 +++ git/bfd/reloc.c 2017-09-04 18:06:10.740066291 +0530 @@ -623,7 +623,10 @@ PR 17512: file: c146ab8b, 46dff27f, 38e53ebf. */ octets = reloc_entry->address * bfd_octets_per_byte (abfd); if (octets + bfd_get_reloc_size (howto) - > bfd_get_section_limit_octets (abfd, input_section)) + > bfd_get_section_limit_octets (abfd, input_section) + /* Check for an overly large offset which + masquerades as a negative value too. */ + || (octets + bfd_get_reloc_size (howto) < bfd_get_reloc_size (howto))) return bfd_reloc_outofrange; /* Work out which section the relocation is targeted at and the Index: git/bfd/ChangeLog =================================================================== --- git.orig/bfd/ChangeLog 2017-09-04 18:06:10.684065855 +0530 +++ git/bfd/ChangeLog 2017-09-04 18:08:33.845183050 +0530 @@ -75,6 +75,12 @@ 2017-04-26 Nick Clifton + PR binutils/21434 + * reloc.c (bfd_perform_relocation): Check for a negative address + in the reloc. + +2017-04-26 Nick Clifton + PR binutils/21431 * compress.c (bfd_init_section_compress_status): Check the return value from bfd_malloc.