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Warn unsupported compress type and corrupted compressed section

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* readelf.c (dump_section_as_strings): Warn unsupported compress
	type and corrupted compressed section.
	(dump_section_as_bytes): Likewise.
	(load_specific_debug_section): Likewise.
This commit is contained in:
H.J. Lu 2015-07-10 10:23:12 -07:00
parent 209ce4c2de
commit 813dabb9f0
2 changed files with 45 additions and 13 deletions
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7
binutils/ChangeLog
View File

@ -1,3 +1,10 @@
2015-07-10 H.J. Lu <hongjiu.lu@intel.com>
* readelf.c (dump_section_as_strings): Warn unsupported compress
type and corrupted compressed section.
(dump_section_as_bytes): Likewise.
(load_specific_debug_section): Likewise.
2015-07-09 Catherine Moore <clm@codesourcery.com>
* readelf.c (print_mips_fp_abi_value): Handle

51
binutils/readelf.c
View File

@ -12030,13 +12030,21 @@ dump_section_as_strings (Elf_Internal_Shdr * section, FILE * file)
unsigned int compression_header_size
= get_compression_header (& chdr, (unsigned char *) start);
if (chdr.ch_type == ELFCOMPRESS_ZLIB
&& chdr.ch_addralign == section->sh_addralign)
if (chdr.ch_type != ELFCOMPRESS_ZLIB)
{
uncompressed_size = chdr.ch_size;
start += compression_header_size;
new_size -= compression_header_size;
warn (_("section '%s' has unsupported compress type: %d\n"),
printable_section_name (section), chdr.ch_type);
return;
}
else if (chdr.ch_addralign != section->sh_addralign)
{
warn (_("compressed section '%s' is corrupted\n"),
printable_section_name (section));
return;
}
uncompressed_size = chdr.ch_size;
start += compression_header_size;
new_size -= compression_header_size;
}
else if (new_size > 12 && streq ((char *) start, "ZLIB"))
{
@ -12156,13 +12164,21 @@ dump_section_as_bytes (Elf_Internal_Shdr * section,
unsigned int compression_header_size
= get_compression_header (& chdr, start);
if (chdr.ch_type == ELFCOMPRESS_ZLIB
&& chdr.ch_addralign == section->sh_addralign)
if (chdr.ch_type != ELFCOMPRESS_ZLIB)
{
uncompressed_size = chdr.ch_size;
start += compression_header_size;
new_size -= compression_header_size;
warn (_("section '%s' has unsupported compress type: %d\n"),
printable_section_name (section), chdr.ch_type);
return;
}
else if (chdr.ch_addralign != section->sh_addralign)
{
warn (_("compressed section '%s' is corrupted\n"),
printable_section_name (section));
return;
}
uncompressed_size = chdr.ch_size;
start += compression_header_size;
new_size -= compression_header_size;
}
else if (new_size > 12 && streq ((char *) start, "ZLIB"))
{
@ -12290,9 +12306,18 @@ load_specific_debug_section (enum dwarf_section_display_enum debug,
Elf_Internal_Chdr chdr;
unsigned int compression_header_size
= get_compression_header (&chdr, start);
if (chdr.ch_type != ELFCOMPRESS_ZLIB
|| chdr.ch_addralign != sec->sh_addralign)
return 0;
if (chdr.ch_type != ELFCOMPRESS_ZLIB)
{
warn (_("section '%s' has unsupported compress type: %d\n"),
section->name, chdr.ch_type);
return 0;
}
else if (chdr.ch_addralign != sec->sh_addralign)
{
warn (_("compressed section '%s' is corrupted\n"),
section->name);
return 0;
}
uncompressed_size = chdr.ch_size;
start += compression_header_size;
size -= compression_header_size;