diff options
Diffstat (limited to 'binutils/readelf.c')
| -rw-r--r-- | binutils/readelf.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/binutils/readelf.c b/binutils/readelf.c index 970fbc0..0f945dc 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -3871,6 +3871,22 @@ process_section_headers (FILE *file) break; } +#define CHECK_ENTSIZE_VALUES(section, i, size32, size64) \ + do \ + { \ + size_t expected_entsize \ + = is_32bit_elf ? size32 : size64; \ + if (section->sh_entsize != expected_entsize) \ + error (_("Section %d has invalid sh_entsize %lx (expected %lx)\n"), \ + i, (unsigned long int) section->sh_entsize, \ + (unsigned long int) expected_entsize); \ + section->sh_entsize = expected_entsize; \ + } \ + while (0) +#define CHECK_ENTSIZE(section, i, type) \ + CHECK_ENTSIZE_VALUES (section, i, sizeof (Elf32_External_##type), \ + sizeof (Elf64_External_##type)) + for (i = 0, section = section_headers; i < elf_header.e_shnum; i++, section++) @@ -3885,6 +3901,7 @@ process_section_headers (FILE *file) continue; } + CHECK_ENTSIZE (section, i, Sym); num_dynamic_syms = section->sh_size / section->sh_entsize; dynamic_symbols = GET_ELF_SYMBOLS (file, section); } @@ -3910,6 +3927,14 @@ process_section_headers (FILE *file) } symtab_shndx_hdr = section; } + else if (section->sh_type == SHT_SYMTAB) + CHECK_ENTSIZE (section, i, Sym); + else if (section->sh_type == SHT_GROUP) + CHECK_ENTSIZE_VALUES (section, i, GRP_ENTRY_SIZE, GRP_ENTRY_SIZE); + else if (section->sh_type == SHT_REL) + CHECK_ENTSIZE (section, i, Rel); + else if (section->sh_type == SHT_RELA) + CHECK_ENTSIZE (section, i, Rela); else if ((do_debugging || do_debug_info || do_debug_abbrevs || do_debug_lines || do_debug_pubnames || do_debug_aranges || do_debug_frames || do_debug_macinfo || do_debug_str @@ -4488,6 +4513,10 @@ process_relocs (FILE *file) char *strtab = NULL; symsec = SECTION_HEADER (section->sh_link); + if (symsec->sh_type != SHT_SYMTAB + && symsec->sh_type != SHT_DYNSYM) + continue; + nsyms = symsec->sh_size / symsec->sh_entsize; symtab = GET_ELF_SYMBOLS (file, symsec); @@ -6358,7 +6387,7 @@ process_version_sections (FILE *file) break; link_section = SECTION_HEADER (section->sh_link); - total = section->sh_size / section->sh_entsize; + total = section->sh_size / sizeof (Elf_External_Versym); if (SECTION_HEADER_INDEX (link_section->sh_link) >= elf_header.e_shnum) |