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Fix memory access problems exposed by fuzzed binaries.

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PR binutils/17512
	* objdump.c (free_debug_section): Reset the compress_status as
	well.

	* compress.c (bfd_get_full_section_contents): Fail if there are no
	section contents available when the compress_status is
	COMPRESS_SECTION_DONE.
	* libbfd.c (bfd_malloc): Refuse to allocate a negative size.
	(bfd_malloc2): Use bfd_malloc.
	(bfd_realloc): Refuse to reallocate a negative size.
	(bfd_realloc2): Use bfd_realloc.
	(bfd_realloc_or_free): Use bfd_realloc.
	(bfd_zmalloc): Use bfd_malloc.
	(bfd_zmalloc): Use bfd_malloc2.
	* opncls.c (bfd_alloc): Refuse to allocate a negative size.
This commit is contained in:
Nick Clifton
2014-12-03 19:50:48 +00:00
parent 4759c34e12
commit db6b071a97
6 changed files with 61 additions and 104 deletions
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2
bfd/compress.c
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@@ -244,6 +244,8 @@ bfd_get_full_section_contents (bfd *abfd, sec_ptr sec, bfd_byte **ptr)
#endif
case COMPRESS_SECTION_DONE:
if (sec->contents == NULL)
return FALSE;
if (p == NULL)
{
p = (bfd_byte *) bfd_malloc (sz);