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* elf.c (bfd_elf_string_from_elf_section): Check for an invalid

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string index.
This commit is contained in:
Ian Lance Taylor
1997-06-26 15:40:41 +00:00
parent 8211c92986
commit 20db24950c
2 changed files with 19 additions and 6 deletions
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3
bfd/ChangeLog
View File

@ -1,5 +1,8 @@
Thu Jun 26 01:26:31 1997 Ian Lance Taylor <ian@cygnus.com>
* elf.c (bfd_elf_string_from_elf_section): Check for an invalid
string index.
* elflink.h (elf_link_output_extsym): Use the right section for a
common symbol.
* elf32-mips.c (mips_elf_link_output_symbol_hook): If a common

22
bfd/elf.c
View File

@ -305,6 +305,18 @@ bfd_elf_string_from_elf_section (abfd, shindex, strindex)
&& bfd_elf_get_str_section (abfd, shindex) == NULL)
return NULL;
if (strindex >= hdr->sh_size)
{
(*_bfd_error_handler)
("%s: invalid string offset %u >= %lu for section `%s'",
bfd_get_filename (abfd), strindex, (unsigned long) hdr->sh_size,
((shindex == elf_elfheader(abfd)->e_shstrndx
&& strindex == hdr->sh_name)
? ".shstrtab"
: elf_string_from_elf_strtab (abfd, hdr->sh_name)));
return "";
}
return ((char *) hdr->contents) + strindex;
}
@ -749,7 +761,7 @@ bfd_elf_print_symbol (abfd, filep, symbol, how)
version_string = "";
else if (vernum == 1)
version_string = "Base";
else if (vernum < elf_tdata (abfd)->cverdefs)
else if (vernum <= elf_tdata (abfd)->cverdefs)
version_string =
elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
else
@ -775,13 +787,13 @@ bfd_elf_print_symbol (abfd, filep, symbol, how)
}
if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
fprintf (file, " %-12s", version_string);
fprintf (file, " %-11s", version_string);
else
{
int i;
fprintf (file, " (%s)", version_string);
for (i = strlen (version_string) - 10; i > 0; --i)
for (i = 10 - strlen (version_string); i > 0; --i)
putc (' ', file);
}
}
@ -2868,11 +2880,9 @@ prep_headers (abfd)
i_ehdrp->e_machine = EM_CYGNUS_ARC;
break;
/* end-sanitize-arc */
/* start-sanitize-m32r */
case bfd_arch_m32r:
i_ehdrp->e_machine = EM_CYGNUS_M32R;
break;
/* end-sanitize-m32r */
case bfd_arch_mn10200:
i_ehdrp->e_machine = EM_CYGNUS_MN10200;
break;
@ -3164,7 +3174,7 @@ copy_private_bfd_data (ibfd, obfd)
m = ((struct elf_segment_map *)
bfd_alloc (obfd,
(sizeof (struct elf_segment_map)
+ (csecs - 1) * sizeof (asection *))));
+ ((size_t) csecs - 1) * sizeof (asection *))));
if (m == NULL)
return false;