It calls x.Equals() a "dereference", unfortunately using C/C++ terminology (for historical reasons). mruby is vulnerable to NULL Pointer. This compliant solution eliminates the null pointer deference by initializing sk to tun->sk following the null pointer check. Can I use the spell Immovable Object to create a castle which floats above the clouds? Example: tool developers, security researchers, pen-testers, incident response analysts. CWE - CWE-476: NULL Pointer Dereference (4.11) - Mitre Corporation Server allows remote attackers to cause a denial of service (crash) via malformed requests that trigger a null dereference. availability of the system. Passing a null pointer tomemcpy() would produce undefined behavior, even if the number of bytes to copy were 0. This table specifies different individual consequences associated with the weakness. If the operand has type "type", the result has type "pointer to type". Embedded hyperlinks in a thesis or research paper, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). Thank you for the description (comments).It Cleared my doubts. Possibly Clang/LLVM may choose to always return a valid value for &NULL->member. If you trigger an unhandled exception or similar error that was discovered and handled by the application's environment, it may still indicate unexpected conditions that were not handled by the application itself. I suggest that this topic needs to include calloc() and realloc() Refer to Linux man pages online for more enlightenment about malloc(), and friends. The 4gig boundary will probably be important too with unsigned int in LP64, but since size_t will be 64-bit, there will have to be some truncation that compilers will be able to warn on. So 'decoded' will always false. If copying takes place between objects that overlap, the behavior is undefined. I'll add that right now, but I feel it's pointless, since it will only clutter up the question. Coverity Collector User Votes: 0 Vote for this issue Watchers: 1 Start watching this issue. but we still consider it a violation of this rule for practicality, although to be anal, it is instead a violation of ARR30-C.