Incomplete Cleanup

The software does not properly "clean up" and remove temporary or supporting resources after they have been used.


Demonstrations

The following examples help to illustrate the nature of this weakness and describe methods or techniques which can be used to mitigate the risk.

Note that the examples here are by no means exhaustive and any given weakness may have many subtle varieties, each of which may require different detection methods or runtime controls.

Example One

Stream resources in a Java application should be released in a finally block, otherwise an exception thrown before the call to close() would result in an unreleased I/O resource. In the example below, the close() method is called in the try block (incorrect).

try {
  InputStream is = new FileInputStream(path);
  byte b[] = new byte[is.available()];
  is.read(b);
  is.close();
} catch (Throwable t) {
  log.error("Something bad happened: " + t.getMessage());
}

See Also

CISQ Quality Measures - Reliability

Weaknesses in this category are related to the CISQ Quality Measures for Reliability. Presence of these weaknesses could reduce the reliability of the software.

SEI CERT C Coding Standard - Guidelines 09. Input Output (FIO)

Weaknesses in this category are related to the rules and recommendations in the Input Output (FIO) section of the SEI CERT C Coding Standard.

SEI CERT C Coding Standard - Guidelines 08. Memory Management (MEM)

Weaknesses in this category are related to the rules and recommendations in the Memory Management (MEM) section of the SEI CERT C Coding Standard.

Comprehensive CWE Dictionary

This view (slice) covers all the elements in CWE.

Weaknesses Introduced During Implementation

This view (slice) lists weaknesses that can be introduced during implementation.

Weaknesses Introduced During Design

This view (slice) lists weaknesses that can be introduced during design.


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