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| author | Nick Clifton <nickc@redhat.com> | 2015-01-05 23:13:50 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2015-01-05 23:13:50 +0000 |
| commit | 896ca0981329171639b1fe0b934393a79ef4fdfb (patch) | |
| tree | ac6f2a1d6ab8084254dac309ba83173eb962d5c2 /bfd/elf32-i386.c | |
| parent | 82b1b41bcdc6d01fdbd94b246e24a8a8f8c2bddd (diff) | |
| download | gdb-896ca0981329171639b1fe0b934393a79ef4fdfb.zip gdb-896ca0981329171639b1fe0b934393a79ef4fdfb.tar.gz gdb-896ca0981329171639b1fe0b934393a79ef4fdfb.tar.bz2 | |
More fixes for invalid memory accesses triggered by fuzzed binaries.
PR binutils/17512
* nm.c (print_symbol): Add 'is_synthetic' parameter. Use it to
help initialize the info.elfinfo field.
(print_size_symbols): Add 'synth_count' parameter. Use it to set
the is_synthetic parameter when calling print_symbol.
(print_symbols): Likewise.
(display_rel_file): Pass synth_count to printing function.
(display_archive): Break loop if the last archive displayed
matches the current archive.
* size.c (display_archive): Likewise.
* archive.c (do_slurp_bsd_armap): Make sure that the parsed sized
is at least big enough for the header to be read.
* elf32-i386.c (elf_i386_get_plt_sym_val): Skip unknown relocs.
* mach-o.c (bfd_mach_o_get_synthetic_symtab): Add range checks.
(bfd_mach_o_read_command): Prevetn duplicate error messages about
unrecognized commands.
* syms.c (_bfd_stab_section_find_nearest_line): Add range checks
when indexing into the string table.
Diffstat (limited to 'bfd/elf32-i386.c')
| -rw-r--r-- | bfd/elf32-i386.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index 24e3d4c..85acf0f 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -5194,8 +5194,9 @@ bad_return: { long reloc_index; - if (p->howto->type != R_386_JUMP_SLOT - && p->howto->type != R_386_IRELATIVE) + if (p->howto == NULL /* PR 17512: file: bc9d6cf5. */ + || (p->howto->type != R_386_JUMP_SLOT + && p->howto->type != R_386_IRELATIVE)) continue; reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset |