Fix an illegal memory access when trying to copy an ELF binary with corrupt section symbols.
PR 23113 * elf.c (ignore_section_sym): Check for the output_section pointer being NULL before dereferencing it.
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2018-04-24 Nick Clifton <nickc@redhat.com>
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PR 23113
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* elf.c (ignore_section_sym): Check for the output_section pointer
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being NULL before dereferencing it.
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PR 23110
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* peXXigen.c (_bfd_XX_bfd_copy_private_bfd_data_common): Check for
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a negative PE_DEBUG_DATA size before iterating over the debug data.
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@ -4022,15 +4022,22 @@ ignore_section_sym (bfd *abfd, asymbol *sym)
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{
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elf_symbol_type *type_ptr;
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if (sym == NULL)
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return FALSE;
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if ((sym->flags & BSF_SECTION_SYM) == 0)
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return FALSE;
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if (sym->section == NULL)
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return TRUE;
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type_ptr = elf_symbol_from (abfd, sym);
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return ((type_ptr != NULL
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&& type_ptr->internal_elf_sym.st_shndx != 0
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&& bfd_is_abs_section (sym->section))
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|| !(sym->section->owner == abfd
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|| (sym->section->output_section->owner == abfd
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|| (sym->section->output_section != NULL
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&& sym->section->output_section->owner == abfd
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&& sym->section->output_offset == 0)
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|| bfd_is_abs_section (sym->section)));
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}
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