Update the NSS bug number for the invalid read when AES-CBC decrypting.

crypto/encryptor_nss.cc

 // Copyright (c) 2011 The Chromium 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 "crypto/encryptor.h"
 
 #include <cryptohi.h>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 83 matching lines @@
       key_->key(), param_.get()));
   if (!context.get())
     return false;
 
   if (mode_ == CTR)
     return CryptCTR(context.get(), ciphertext, plaintext);
 
   if (ciphertext.size() % AES_BLOCK_SIZE != 0) {
     // Decryption will fail if the input is not a multiple of the block size.
     // PK11_CipherOp has a bug where it will do an invalid memory access before
-    // the start of the input, so avoid calling it. (Possibly NSS bug 921687).
+    // the start of the input, so avoid calling it. (NSS bug 922780).
     plaintext->clear();
     return false;
   }
 
   return Crypt(context.get(), ciphertext, plaintext);
 }
 
 bool Encryptor::Crypt(PK11Context* context,
                       const base::StringPiece& input,
                       std::string* output) {
@@ skipping 78 matching lines @@
 
   // Use |output_data| to mask |input|.
   MaskMessage(
       reinterpret_cast<uint8*>(const_cast<char*>(input.data())),
       input.length(), output_data, output_data);
   output->resize(input.length());
   return true;
 }
 
 }  // namespace crypto