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EXP01-EX0: A method may dereference an object parameter without testing it for null if the method documents that it throws a NullPointerException.
EXP01-EX1: Private methods may dereference an object parameter without testing it for null. This is permitted because anyone with the ability to invoke the method can also access its source code to see that it might throw NullPointerException.
Risk Assessment
Dereferencing a null pointer can lead to a denial of service. In multithreaded programs, null pointer dereferences can violate cache coherency policies and can cause resource leaks.
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="504c3a7ecaa3c192-03439959-4dd449ae-b1438c0d-ddea640e6137117f76576469"><ac:plain-text-body><![CDATA[ | [ISO/IEC TR 24772:2010 | http://www.aitcnet.org/isai/] | Null Pointer Dereference [XYH] | ]]></ac:plain-text-body></ac:structured-macro> |
CWE-476. NULL pointer dereference |
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="bbc11aa58af13f7f-3b36a626-415943e2-bddf8140-d1761fc777daa79f5f6ebd46"><ac:plain-text-body><![CDATA[ | [[API 2006 | AA. References#API 06]] | [Method | http://java.sun.com/javase/6/docs/api/java/security/AccessController.html#doPrivileged(java.security.PrivilegedAction)] | ]]></ac:plain-text-body></ac:structured-macro> |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="7ff0b49736cd5fba-456636d9-4f39476e-aa60919c-4df9bba94732dd3c5327476c"><ac:plain-text-body><![CDATA[ | [[Hovemeyer 2007 | AA. References#Hovemeyer 07]] |
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="e4eff38f8a371933-9b4b6265-4a4d4f27-b75b8a61-89257f23352b45b41a8143ca"><ac:plain-text-body><![CDATA[ | [[Reasoning 2003 | AA. References#Reasoning 03]] | Defect ID 00-0001 | ]]></ac:plain-text-body></ac:structured-macro> | |
| Null Pointer Dereference | ||||
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="75df48dfe8b10bd7-d7e4048d-4e224385-8d029e02-97b807edaebb2fc81391b582"><ac:plain-text-body><![CDATA[ | [[SDN 2008 | AA. References#SDN 08]] | [Bug ID 6514454 | http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6514454] | ]]></ac:plain-text-body></ac:structured-macro> |
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