diff --git a/llvm/include/llvm/Object/ELFObjectFile.h b/llvm/include/llvm/Object/ELFObjectFile.h
--- a/llvm/include/llvm/Object/ELFObjectFile.h
+++ b/llvm/include/llvm/Object/ELFObjectFile.h
@@ -1019,8 +1019,14 @@
 
 template <class ELFT>
 elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_begin() const {
-  DataRefImpl Sym = toDRI(DotDynSymSec, 0);
-  return symbol_iterator(SymbolRef(Sym, this));
+  if (!DotDynSymSec || !DotDynSymSec->sh_size ||
+      DotDynSymSec->sh_size % sizeof(Elf_Sym) != 0) {
+    // We are ignoring malformed .dynsym section.
+    return symbol_iterator(SymbolRef(toDRI(DotDynSymSec, 0), this));
+  } else {
+    // Skip 0-index NULL symbol.
+    return symbol_iterator(SymbolRef(toDRI(DotDynSymSec, 1), this));
+  }
 }
 
 template <class ELFT>