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Failure to explicitly release nonmemory system resources when they are no longer needed can result in resource exhaustion.

Rule	Severity	Likelihood	Detectable	RepairableRemediation Cost	Priority	Level
FIO04-J	Low	Probable	Yes	MediumNo	P4	L3

Automated Detection

Although sound automated detection of this vulnerability is not feasible in the general case, many interesting cases can be soundly detected.

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Tool

Version

Checker

Description

Include Page

	CodeSonar_V
	CodeSonar_V

JAVA.ALLOC.LEAK.NOTCLOSED
JAVA.ALLOC.LEAK.NOTSTORED

Closeable not closed
Closeable not stored

7.5

ITERATOR
JDBC_CONNECTION
RESOURCE_LEAK

Implemented

Include Page

	Parasoft_V
	Parasoft_V

CERT.FIO04.LEAKS
CERT.FIO04.CIO
CERT.FIO04.CCR

Ensure resources are deallocated
Close input and output resources in "finally" blocks
Close all "java.io.Closeable" resources in a "finally" block

Include Page

	PVS-Studio_V
	PVS-Studio_V

V6127

SonarQube

Include Page

	SonarQube_V
	SonarQube_V

S2095

Implemented

SEI CERT C Coding Standard	FIO22-C. Close files before spawning processes
SEI CERT C++ Coding Standard	FIO51-CPP. Close files when they are no longer needed
MITRE CWE	CWE-404, Improper Resource Shutdown or Release CWE-405, Asymmetric Resource Consumption (Amplification) CWE-459, Incomplete Cleanup CWE-770, Allocation of Resources without Limits or Throttling

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