FreeChainXenon/binutils-gdb
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Fix address violations when atempting to parse fuzzed binaries.

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PR binutils/21665
bfd	* opncls.c (get_build_id): Check that the section is beig enough
	to contain the whole note.
	* compress.c (bfd_get_full_section_contents): Check for and reject
	a section whoes size is greater than the size of the entire file.
	* elf32-v850.c (v850_elf_copy_notes): Allow for the ouput to not
	contain a notes section.

binutils* objdump.c (disassemble_section): Skip any section that is bigger
	than the entire file.
This commit is contained in:
Nick Clifton 2017-06-26 15:25:08 +01:00
parent 0602cdad74
commit cfd14a500e
6 changed files with 43 additions and 5 deletions
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4
binutils/objdump.c
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@ -2114,7 +2114,7 @@ disassemble_section (bfd *abfd, asection *section, void *inf)
return;
datasize = bfd_get_section_size (section);
if (datasize == 0)
if (datasize == 0 || datasize >= (bfd_size_type) bfd_get_file_size (abfd))
return;
if (start_address == (bfd_vma) -1
@ -2985,7 +2985,7 @@ dump_target_specific (bfd *abfd)
static void
dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
{
bfd_byte *data = 0;
bfd_byte *data = NULL;
bfd_size_type datasize;
bfd_vma addr_offset;
bfd_vma start_offset;