[jira] [Created] (CASSANDRA-12567) Null Dereference

["Eduardo Aguinaga (JIRA)" <ji...@apache.org>]

Eduardo Aguinaga created CASSANDRA-12567:
--------------------------------------------

             Summary: Null Dereference
                 Key: CASSANDRA-12567
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12567
             Project: Cassandra
          Issue Type: Sub-task
            Reporter: Eduardo Aguinaga


Overview:
In May through June of 2016 a static analysis was performed on version 3.0.5 of the Cassandra source code. The analysis included an automated analysis using HP Fortify v4.21 SCA and a manual analysis utilizing SciTools Understand v4. The results of that analysis includes the issue below.

Issue:
In the file AlterTableStatement.java on lines 139, 190 & 192, a null dereference may occur by referencing the member validator, which can be assigned null on line 96. at the beginning of the method announceMigration.

{code:java}
AlterTableStatement.java, lines 88-139:
088 public Event.SchemaChange announceMigration(boolean isLocalOnly) throws RequestValidationException
089 {
. . .
096     CQL3Type validator = this.validator == null ? null : this.validator.prepare(keyspace());
. . .
108     switch (oType)
109     {
110         case ADD:
. . .
138 
139             AbstractType<?> type = validator.getType();
{code}



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