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Import patches for PR/17510 and PR/17512 to fix reading corrupt ELF binaries. 

Resolves: BZ #1157276, #1157277
This commit is contained in:
Nick Clifton 2014-10-28 10:55:10 +00:00
parent b57b4a1e9b
commit d81a234001
1 changed files with 868 additions and 0 deletions
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binutils-2.24-corrupt-elf.patch Normal file
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diff -rcp ../binutils-2.24.orig/bfd/elf.c bfd/elf.c
*** ../binutils-2.24.orig/bfd/elf.c 2014-10-28 09:39:29.505064397 +0000
--- bfd/elf.c 2014-10-28 09:45:17.973958424 +0000
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1582,1619 ****
Elf_Internal_Ehdr *ehdr;
const struct elf_backend_data *bed;
const char *name;
if (shindex >= elf_numsections (abfd))
return FALSE;
hdr = elf_elfsections (abfd)[shindex];
ehdr = elf_elfheader (abfd);
name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx,
hdr->sh_name);
if (name == NULL)
! return FALSE;
bed = get_elf_backend_data (abfd);
switch (hdr->sh_type)
{
case SHT_NULL:
/* Inactive section. Throw it away. */
! return TRUE;
! case SHT_PROGBITS: /* Normal section with contents. */
! case SHT_NOBITS: /* .bss section. */
! case SHT_HASH: /* .hash section. */
! case SHT_NOTE: /* .note section. */
case SHT_INIT_ARRAY: /* .init_array section. */
case SHT_FINI_ARRAY: /* .fini_array section. */
case SHT_PREINIT_ARRAY: /* .preinit_array section. */
case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
case SHT_GNU_HASH: /* .gnu.hash section. */
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_DYNAMIC: /* Dynamic linking information. */
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
! return FALSE;
if (hdr->sh_link > elf_numsections (abfd))
{
/* PR 10478: Accept Solaris binaries with a sh_link
--- 1582,1648 ----
Elf_Internal_Ehdr *ehdr;
const struct elf_backend_data *bed;
const char *name;
+ bfd_boolean ret = TRUE;
+ static bfd_boolean * sections_being_created = NULL;
+ static unsigned int nesting = 0;
if (shindex >= elf_numsections (abfd))
return FALSE;
+ if (++ nesting > 3)
+ {
+ /* PR17512: A corrupt ELF binary might contain a recursive group of
+ sections, each the string indicies pointing to the next in the
+ loop. Detect this here, by refusing to load a section that we are
+ already in the process of loading. We only trigger this test if
+ we have nested at least three sections deep as normal ELF binaries
+ can expect to recurse at least once. */
+
+ if (sections_being_created == NULL)
+ {
+ /* FIXME: It would be more efficient to attach this array to the bfd somehow. */
+ sections_being_created = (bfd_boolean *)
+ bfd_zalloc (abfd, elf_numsections (abfd) * sizeof (bfd_boolean));
+ }
+ if (sections_being_created [shindex])
+ {
+ (*_bfd_error_handler)
+ (_("%B: warning: loop in section dependencies detected"), abfd);
+ return FALSE;
+ }
+ sections_being_created [shindex] = TRUE;
+ }
+
hdr = elf_elfsections (abfd)[shindex];
ehdr = elf_elfheader (abfd);
name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx,
hdr->sh_name);
if (name == NULL)
! goto fail;
bed = get_elf_backend_data (abfd);
switch (hdr->sh_type)
{
case SHT_NULL:
/* Inactive section. Throw it away. */
! goto success;
! case SHT_PROGBITS: /* Normal section with contents. */
! case SHT_NOBITS: /* .bss section. */
! case SHT_HASH: /* .hash section. */
! case SHT_NOTE: /* .note section. */
case SHT_INIT_ARRAY: /* .init_array section. */
case SHT_FINI_ARRAY: /* .fini_array section. */
case SHT_PREINIT_ARRAY: /* .preinit_array section. */
case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
case SHT_GNU_HASH: /* .gnu.hash section. */
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
case SHT_DYNAMIC: /* Dynamic linking information. */
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
! goto fail;
!
if (hdr->sh_link > elf_numsections (abfd))
{
/* PR 10478: Accept Solaris binaries with a sh_link
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1627,1637 ****
break;
/* Otherwise fall through. */
default:
! return FALSE;
}
}
else if (elf_elfsections (abfd)[hdr->sh_link] == NULL)
! return FALSE;
else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
{
Elf_Internal_Shdr *dynsymhdr;
--- 1656,1666 ----
break;
/* Otherwise fall through. */
default:
! goto fail;
}
}
else if (elf_elfsections (abfd)[hdr->sh_link] == NULL)
! goto fail;
else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
{
Elf_Internal_Shdr *dynsymhdr;
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1660,1683 ****
}
}
}
! break;
! case SHT_SYMTAB: /* A symbol table */
if (elf_onesymtab (abfd) == shindex)
! return TRUE;
if (hdr->sh_entsize != bed->s->sizeof_sym)
! return FALSE;
if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
{
if (hdr->sh_size != 0)
! return FALSE;
/* Some assemblers erroneously set sh_info to one with a
zero sh_size. ld sees this as a global symbol count
of (unsigned) -1. Fix it here. */
hdr->sh_info = 0;
! return TRUE;
}
BFD_ASSERT (elf_onesymtab (abfd) == 0);
elf_onesymtab (abfd) = shindex;
elf_tdata (abfd)->symtab_hdr = *hdr;
--- 1689,1714 ----
}
}
}
! goto success;
! case SHT_SYMTAB: /* A symbol table. */
if (elf_onesymtab (abfd) == shindex)
! goto success;
if (hdr->sh_entsize != bed->s->sizeof_sym)
! goto fail;
!
if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
{
if (hdr->sh_size != 0)
! goto fail;
/* Some assemblers erroneously set sh_info to one with a
zero sh_size. ld sees this as a global symbol count
of (unsigned) -1. Fix it here. */
hdr->sh_info = 0;
! goto success;
}
+
BFD_ASSERT (elf_onesymtab (abfd) == 0);
elf_onesymtab (abfd) = shindex;
elf_tdata (abfd)->symtab_hdr = *hdr;
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1694,1700 ****
&& (abfd->flags & DYNAMIC) != 0
&& ! _bfd_elf_make_section_from_shdr (abfd, hdr, name,
shindex))
! return FALSE;
/* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we
can't read symbols without that section loaded as well. It
--- 1725,1731 ----
&& (abfd->flags & DYNAMIC) != 0
&& ! _bfd_elf_make_section_from_shdr (abfd, hdr, name,
shindex))
! goto fail;
/* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we
can't read symbols without that section loaded as well. It
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1720,1745 ****
break;
}
if (i != shindex)
! return bfd_section_from_shdr (abfd, i);
}
! return TRUE;
! case SHT_DYNSYM: /* A dynamic symbol table */
if (elf_dynsymtab (abfd) == shindex)
! return TRUE;
if (hdr->sh_entsize != bed->s->sizeof_sym)
! return FALSE;
if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
{
if (hdr->sh_size != 0)
! return FALSE;
/* Some linkers erroneously set sh_info to one with a
zero sh_size. ld sees this as a global symbol count
of (unsigned) -1. Fix it here. */
hdr->sh_info = 0;
! return TRUE;
}
BFD_ASSERT (elf_dynsymtab (abfd) == 0);
elf_dynsymtab (abfd) = shindex;
elf_tdata (abfd)->dynsymtab_hdr = *hdr;
--- 1751,1779 ----
break;
}
if (i != shindex)
! ret = bfd_section_from_shdr (abfd, i);
}
! goto success;
! case SHT_DYNSYM: /* A dynamic symbol table. */
if (elf_dynsymtab (abfd) == shindex)
! goto success;
if (hdr->sh_entsize != bed->s->sizeof_sym)
! goto fail;
!
if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
{
if (hdr->sh_size != 0)
! goto fail;
!
/* Some linkers erroneously set sh_info to one with a
zero sh_size. ld sees this as a global symbol count
of (unsigned) -1. Fix it here. */
hdr->sh_info = 0;
! goto success;
}
+
BFD_ASSERT (elf_dynsymtab (abfd) == 0);
elf_dynsymtab (abfd) = shindex;
elf_tdata (abfd)->dynsymtab_hdr = *hdr;
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1748,1781 ****
/* Besides being a symbol table, we also treat this as a regular
section, so that objcopy can handle it. */
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
if (elf_symtab_shndx (abfd) == shindex)
! return TRUE;
BFD_ASSERT (elf_symtab_shndx (abfd) == 0);
elf_symtab_shndx (abfd) = shindex;
elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
! return TRUE;
! case SHT_STRTAB: /* A string table */
if (hdr->bfd_section != NULL)
! return TRUE;
if (ehdr->e_shstrndx == shindex)
{
elf_tdata (abfd)->shstrtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
! return TRUE;
}
if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex)
{
symtab_strtab:
elf_tdata (abfd)->strtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr;
! return TRUE;
}
if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex)
{
dynsymtab_strtab:
--- 1782,1819 ----
/* Besides being a symbol table, we also treat this as a regular
section, so that objcopy can handle it. */
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
! case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections. */
if (elf_symtab_shndx (abfd) == shindex)
! goto success;
BFD_ASSERT (elf_symtab_shndx (abfd) == 0);
elf_symtab_shndx (abfd) = shindex;
elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
! goto success;
! case SHT_STRTAB: /* A string table. */
if (hdr->bfd_section != NULL)
! goto success;
!
if (ehdr->e_shstrndx == shindex)
{
elf_tdata (abfd)->shstrtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
! goto success;
}
+
if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex)
{
symtab_strtab:
elf_tdata (abfd)->strtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr;
! goto success;
}
+
if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex)
{
dynsymtab_strtab:
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1784,1791 ****
elf_elfsections (abfd)[shindex] = hdr;
/* We also treat this as a regular section, so that objcopy
can handle it. */
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
}
/* If the string table isn't one of the above, then treat it as a
--- 1822,1830 ----
elf_elfsections (abfd)[shindex] = hdr;
/* We also treat this as a regular section, so that objcopy
can handle it. */
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
! goto success;
}
/* If the string table isn't one of the above, then treat it as a
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1803,1811 ****
{
/* Prevent endless recursion on broken objects. */
if (i == shindex)
! return FALSE;
if (! bfd_section_from_shdr (abfd, i))
! return FALSE;
if (elf_onesymtab (abfd) == i)
goto symtab_strtab;
if (elf_dynsymtab (abfd) == i)
--- 1842,1850 ----
{
/* Prevent endless recursion on broken objects. */
if (i == shindex)
! goto fail;
if (! bfd_section_from_shdr (abfd, i))
! goto fail;
if (elf_onesymtab (abfd) == i)
goto symtab_strtab;
if (elf_dynsymtab (abfd) == i)
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1813,1819 ****
}
}
}
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_REL:
case SHT_RELA:
--- 1852,1859 ----
}
}
}
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
case SHT_REL:
case SHT_RELA:
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1828,1834 ****
if (hdr->sh_entsize
!= (bfd_size_type) (hdr->sh_type == SHT_REL
? bed->s->sizeof_rel : bed->s->sizeof_rela))
! return FALSE;
/* Check for a bogus link to avoid crashing. */
if (hdr->sh_link >= num_sec)
--- 1868,1874 ----
if (hdr->sh_entsize
!= (bfd_size_type) (hdr->sh_type == SHT_REL
? bed->s->sizeof_rel : bed->s->sizeof_rela))
! goto fail;
/* Check for a bogus link to avoid crashing. */
if (hdr->sh_link >= num_sec)
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1836,1843 ****
((*_bfd_error_handler)
(_("%B: invalid link %lu for reloc section %s (index %u)"),
abfd, hdr->sh_link, name, shindex));
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
}
/* For some incomprehensible reason Oracle distributes
--- 1876,1884 ----
((*_bfd_error_handler)
(_("%B: invalid link %lu for reloc section %s (index %u)"),
abfd, hdr->sh_link, name, shindex));
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
! goto success;
}
/* For some incomprehensible reason Oracle distributes
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1878,1884 ****
if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
|| elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM)
&& ! bfd_section_from_shdr (abfd, hdr->sh_link))
! return FALSE;
/* If this reloc section does not use the main symbol table we
don't treat it as a reloc section. BFD can't adequately
--- 1919,1925 ----
if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
|| elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM)
&& ! bfd_section_from_shdr (abfd, hdr->sh_link))
! goto fail;
/* If this reloc section does not use the main symbol table we
don't treat it as a reloc section. BFD can't adequately
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1893,1906 ****
|| hdr->sh_info >= num_sec
|| elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
|| elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA)
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
if (! bfd_section_from_shdr (abfd, hdr->sh_info))
! return FALSE;
target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
if (target_sect == NULL)
! return FALSE;
esdt = elf_section_data (target_sect);
if (hdr->sh_type == SHT_RELA)
--- 1934,1951 ----
|| hdr->sh_info >= num_sec
|| elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
|| elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA)
! {
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
! goto success;
! }
if (! bfd_section_from_shdr (abfd, hdr->sh_info))
! goto fail;
!
target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
if (target_sect == NULL)
! goto fail;
esdt = elf_section_data (target_sect);
if (hdr->sh_type == SHT_RELA)
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1912,1918 ****
amt = sizeof (*hdr2);
hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
if (hdr2 == NULL)
! return FALSE;
*hdr2 = *hdr;
*p_hdr = hdr2;
elf_elfsections (abfd)[shindex] = hdr2;
--- 1957,1963 ----
amt = sizeof (*hdr2);
hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
if (hdr2 == NULL)
! goto fail;
*hdr2 = *hdr;
*p_hdr = hdr2;
elf_elfsections (abfd)[shindex] = hdr2;
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1928,1961 ****
target_sect->use_rela_p = 1;
}
abfd->flags |= HAS_RELOC;
! return TRUE;
}
case SHT_GNU_verdef:
elf_dynverdef (abfd) = shindex;
elf_tdata (abfd)->dynverdef_hdr = *hdr;
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_GNU_versym:
if (hdr->sh_entsize != sizeof (Elf_External_Versym))
! return FALSE;
elf_dynversym (abfd) = shindex;
elf_tdata (abfd)->dynversym_hdr = *hdr;
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_GNU_verneed:
elf_dynverref (abfd) = shindex;
elf_tdata (abfd)->dynverref_hdr = *hdr;
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_SHLIB:
! return TRUE;
case SHT_GROUP:
if (! IS_VALID_GROUP_SECTION_HEADER (hdr, GRP_ENTRY_SIZE))
! return FALSE;
if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
! return FALSE;
if (hdr->contents != NULL)
{
Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
--- 1973,2012 ----
target_sect->use_rela_p = 1;
}
abfd->flags |= HAS_RELOC;
! goto success;
}
case SHT_GNU_verdef:
elf_dynverdef (abfd) = shindex;
elf_tdata (abfd)->dynverdef_hdr = *hdr;
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
case SHT_GNU_versym:
if (hdr->sh_entsize != sizeof (Elf_External_Versym))
! goto fail;
!
elf_dynversym (abfd) = shindex;
elf_tdata (abfd)->dynversym_hdr = *hdr;
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
case SHT_GNU_verneed:
elf_dynverref (abfd) = shindex;
elf_tdata (abfd)->dynverref_hdr = *hdr;
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
case SHT_SHLIB:
! goto success;
case SHT_GROUP:
if (! IS_VALID_GROUP_SECTION_HEADER (hdr, GRP_ENTRY_SIZE))
! goto fail;
!
if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
! goto fail;
!
if (hdr->contents != NULL)
{
Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1981,1987 ****
}
}
}
! break;
default:
/* Possibly an attributes section. */
--- 2032,2038 ----
}
}
}
! goto success;
default:
/* Possibly an attributes section. */
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 1989,2002 ****
|| hdr->sh_type == bed->obj_attrs_section_type)
{
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
! return FALSE;
_bfd_elf_parse_attributes (abfd, hdr);
! return TRUE;
}
/* Check for any processor-specific section types. */
if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex))
! return TRUE;
if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER)
{
--- 2040,2053 ----
|| hdr->sh_type == bed->obj_attrs_section_type)
{
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
! goto fail;
_bfd_elf_parse_attributes (abfd, hdr);
! goto success;
}
/* Check for any processor-specific section types. */
if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex))
! goto success;
if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER)
{
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 2008,2016 ****
"specific section `%s' [0x%8x]"),
abfd, name, hdr->sh_type);
else
! /* Allow sections reserved for applications. */
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
}
else if (hdr->sh_type >= SHT_LOPROC
&& hdr->sh_type <= SHT_HIPROC)
--- 2059,2070 ----
"specific section `%s' [0x%8x]"),
abfd, name, hdr->sh_type);
else
! {
! /* Allow sections reserved for applications. */
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name,
! shindex);
! goto success;
! }
}
else if (hdr->sh_type >= SHT_LOPROC
&& hdr->sh_type <= SHT_HIPROC)
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 2031,2038 ****
"`%s' [0x%8x]"),
abfd, name, hdr->sh_type);
else
! /* Otherwise it should be processed. */
! return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
}
else
/* FIXME: We should handle this section. */
--- 2085,2095 ----
"`%s' [0x%8x]"),
abfd, name, hdr->sh_type);
else
! {
! /* Otherwise it should be processed. */
! ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
! goto success;
! }
}
else
/* FIXME: We should handle this section. */
*************** bfd_section_from_shdr (bfd *abfd, unsign
*** 2040,2049 ****
(_("%B: don't know how to handle section `%s' [0x%8x]"),
abfd, name, hdr->sh_type);
! return FALSE;
}
! return TRUE;
}
/* Return the local symbol specified by ABFD, R_SYMNDX. */
--- 2097,2113 ----
(_("%B: don't know how to handle section `%s' [0x%8x]"),
abfd, name, hdr->sh_type);
! goto fail;
}
! fail:
! ret = FALSE;
! success:
! if (sections_being_created)
! sections_being_created [shindex] = FALSE;
! if (-- nesting == 0)
! sections_being_created = NULL;
! return ret;
}
/* Return the local symbol specified by ABFD, R_SYMNDX. */
diff -rcp ../binutils-2.24.orig/bfd/peXXigen.c bfd/peXXigen.c
*** ../binutils-2.24.orig/bfd/peXXigen.c 2014-10-28 09:39:31.656075721 +0000
--- bfd/peXXigen.c 2014-10-28 09:43:31.011370536 +0000
*************** _bfd_XXi_swap_aouthdr_in (bfd * abfd,
*** 460,465 ****
--- 460,476 ----
{
int idx;
+ /* PR 17512: Corrupt PE binaries can cause seg-faults. */
+ if (a->NumberOfRvaAndSizes > 16)
+ {
+ (*_bfd_error_handler)
+ (_("%B: aout header specifies an invalid number of data-directory entries: %d"),
+ abfd, a->NumberOfRvaAndSizes);
+ /* Paranoia: If the number is corrupt, then assume that the
+ actual entries themselves might be corrupt as well. */
+ a->NumberOfRvaAndSizes = 0;
+ }
+
for (idx = 0; idx < a->NumberOfRvaAndSizes; idx++)
{
/* If data directory is empty, rva also should be 0. */
*************** pe_print_edata (bfd * abfd, void * vfile
*** 1364,1370 ****
bfd_size_type datasize = 0;
bfd_size_type dataoff;
bfd_size_type i;
! bfd_signed_vma adj;
struct EDT_type
{
long export_flags; /* Reserved - should be zero. */
--- 1375,1381 ----
bfd_size_type datasize = 0;
bfd_size_type dataoff;
bfd_size_type i;
! bfd_vma adj;
struct EDT_type
{
long export_flags; /* Reserved - should be zero. */
*************** pe_print_edata (bfd * abfd, void * vfile
*** 1414,1419 ****
--- 1425,1437 ----
_("\nThere is an export table, but the section containing it could not be found\n"));
return TRUE;
}
+ else if (!(section->flags & SEC_HAS_CONTENTS))
+ {
+ fprintf (file,
+ _("\nThere is an export table in %s, but that section has no contents\n"),
+ section->name);
+ return TRUE;
+ }
dataoff = addr - section->vma;
datasize = extra->DataDirectory[PE_EXPORT_TABLE].Size;
*************** pe_print_edata (bfd * abfd, void * vfile
*** 1469,1476 ****
fprintf (file,
_("Name \t\t\t\t"));
bfd_fprintf_vma (abfd, file, edt.name);
! fprintf (file,
! " %s\n", data + edt.name - adj);
fprintf (file,
_("Ordinal Base \t\t\t%ld\n"), edt.base);
--- 1487,1497 ----
fprintf (file,
_("Name \t\t\t\t"));
bfd_fprintf_vma (abfd, file, edt.name);
!
! if ((edt.name >= adj) && (edt.name < adj + datasize))
! fprintf (file, " %s\n", data + edt.name - adj);
! else
! fprintf (file, "(outside .edata section)\n");
fprintf (file,
_("Ordinal Base \t\t\t%ld\n"), edt.base);
*************** pe_print_edata (bfd * abfd, void * vfile
*** 1516,1522 ****
_("\nExport Address Table -- Ordinal Base %ld\n"),
edt.base);
! for (i = 0; i < edt.num_functions; ++i)
{
bfd_vma eat_member = bfd_get_32 (abfd,
data + edt.eat_addr + (i * 4) - adj);
--- 1537,1548 ----
_("\nExport Address Table -- Ordinal Base %ld\n"),
edt.base);
! /* PR 17512: Handle corrupt PE binaries. */
! if (edt.eat_addr + (edt.num_functions * 4) - adj >= datasize)
! fprintf (file, _("\tInvalid Export Address Table rva (0x%lx) or entry count (0x%lx)\n"),
! (long) edt.eat_addr,
! (long) edt.num_functions);
! else for (i = 0; i < edt.num_functions; ++i)
{
bfd_vma eat_member = bfd_get_32 (abfd,
data + edt.eat_addr + (i * 4) - adj);
*************** pe_print_edata (bfd * abfd, void * vfile
*** 1552,1558 ****
fprintf (file,
_("\n[Ordinal/Name Pointer] Table\n"));
! for (i = 0; i < edt.num_names; ++i)
{
bfd_vma name_ptr = bfd_get_32 (abfd,
data +
--- 1578,1593 ----
fprintf (file,
_("\n[Ordinal/Name Pointer] Table\n"));
! /* PR 17512: Handle corrupt PE binaries. */
! if (edt.npt_addr + (edt.num_names * 4) - adj >= datasize)
! fprintf (file, _("\tInvalid Name Pointer Table rva (0x%lx) or entry count (0x%lx)\n"),
! (long) edt.npt_addr,
! (long) edt.num_names);
! else if (edt.ot_addr + (edt.num_names * 2) - adj >= datasize)
! fprintf (file, _("\tInvalid Ordinal Table rva (0x%lx) or entry count (0x%lx)\n"),
! (long) edt.ot_addr,
! (long) edt.num_names);
! else for (i = 0; i < edt.num_names; ++i)
{
bfd_vma name_ptr = bfd_get_32 (abfd,
data +
diff -rcp ../binutils-2.24.orig/bfd/srec.c bfd/srec.c
*** ../binutils-2.24.orig/bfd/srec.c 2014-10-28 09:39:30.762071014 +0000
--- bfd/srec.c 2014-10-28 09:40:54.769513267 +0000
*************** srec_bad_byte (bfd *abfd,
*** 248,254 ****
}
else
{
! char buf[10];
if (! ISPRINT (c))
sprintf (buf, "\\%03o", (unsigned int) c);
--- 248,254 ----
}
else
{
! char buf[40];
if (! ISPRINT (c))
sprintf (buf, "\\%03o", (unsigned int) c);
*************** srec_scan (bfd *abfd)
*** 454,460 ****
case 'S':
{
file_ptr pos;
! char hdr[3];
unsigned int bytes, min_bytes;
bfd_vma address;
bfd_byte *data;
--- 454,460 ----
case 'S':
{
file_ptr pos;
! unsigned char hdr[3];
unsigned int bytes, min_bytes;
bfd_vma address;
bfd_byte *data;