[wasm] Decoding the names section should stop if there is a problem with locals.

src/wasm/module-decoder.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/wasm/module-decoder.h"
 
 #include "src/base/functional.h"
 #include "src/base/platform/platform.h"
 #include "src/flags.h"
 #include "src/macro-assembler.h"
@@ skipping 608 matching lines @@
         uint32_t function_name_length = 0;
         uint32_t name_offset =
             consume_string(inner, &function_name_length, false);
         uint32_t func_index = i;
         if (func_index < module->functions.size()) {
           module->functions[func_index].name_offset = name_offset;
           module->functions[func_index].name_length = function_name_length;
         }
 
         uint32_t local_names_count = inner.consume_u32v("local names count");
-        for (uint32_t j = 0; ok() && j < local_names_count; j++) {
+        for (uint32_t j = 0; inner.ok() && j < local_names_count; j++) {
           uint32_t length = inner.consume_u32v("string length");
           inner.consume_bytes(length, "string");
         }
       }
       // Skip the whole names section in the outer decoder.
       consume_bytes(section_iter.payload_length(), nullptr);
       section_iter.advance();
     }
 
     // ===== Remaining sections ==============================================
@@ skipping 654 matching lines @@
     result.push_back({section_start, name_offset, name_length, payload_offset,
                       payload_length, section_length});
   }
 
   return result;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8