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More fixes for memory access violations triggered by fuzzed binaries.

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PR binutils/17512
	* objdump.c (display_any_bfd): Avoid infinite loop closing and
	opening the same archive again and again.

	* archive64.c (bfd_elf64_archive_slurp_armap): Add range checks.
	* libbfd.c (safe_read_leb128): New function.
	* libbfd-in.h (safe_read_leb128): Add prototype.
	* libbfd.h: Regenerate.
	* elf-attrs.c (_bfd_elf_parse_attributes): Use safe_read_leb128.
	Check for an over-long subsection length.
	* elf.c (elf_parse_notes): Check that the namedata is long enough
	for the string comparison that is about to be performed.
	(elf_read_notes): Zero-terminate the note buffer.
This commit is contained in:
Nick Clifton
2014-12-09 12:42:18 +00:00
parent 137d1369ac
commit f64e188b58
9 changed files with 119 additions and 32 deletions
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10
binutils/objdump.c
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@ -3426,7 +3426,15 @@ display_any_bfd (bfd *file, int level)
display_any_bfd (arfile, level + 1);
if (last_arfile != NULL)
bfd_close (last_arfile);
{
bfd_close (last_arfile);
/* PR 17512: file: ac585d01. */
if (arfile == last_arfile)
{
last_arfile = NULL;
break;
}
}
last_arfile = arfile;
}