1 files changed, 12 insertions, 3 deletions
diff --git a/lld/ELF/InputFiles.cpp b/lld/ELF/InputFiles.cpp
index cfe8ae74ffa..a0a38de0d8a 100644
--- a/lld/ELF/InputFiles.cpp
+++ b/lld/ELF/InputFiles.cpp
@@ -775,9 +775,18 @@ template <class ELFT> void SharedFile<ELFT>::parseRest() {
     // Ignore local symbols.
     if (Versym && VersymIndex == VER_NDX_LOCAL)
       continue;
-
-    const Elf_Verdef *V =
-        VersymIndex == VER_NDX_GLOBAL ? nullptr : Verdefs[VersymIndex];
+    const Elf_Verdef *V = nullptr;
+    if (VersymIndex != VER_NDX_GLOBAL) {
+      if (VersymIndex >= Verdefs.size()) {
+        error("corrupt input file: version definition index " +
+              Twine(VersymIndex) + " for symbol " + Name +
+              " is greater than the maximum value " +
+              Twine(Verdefs.size() - 1) + "\n>>> symbol is defined in " +
+              toString(this));
+        continue;
+      }
+      V = Verdefs[VersymIndex];
+    }
 
     if (!Hidden)
       Symtab->addShared(Name, this, Sym, V);