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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/06/17 15:38:03 UTC

[GitHub] [incubator-nuttx] patacongo opened a new issue #1265: C++ constructors have too many priveleges (PROTECTED MODE)

patacongo opened a new issue #1265:
URL: https://github.com/apache/incubator-nuttx/issues/1265


   C++ CONSTRUCTORS HAVE TOO MANY PRIVILEGES (PROTECTED MODE)
   
   When a C++ ELF module is loaded, its C++ constructors are called via sched/task_starthook.c logic.  This logic runs in protected mode.  The is a security hole because the user code runs with kernel-privileges when the constructor executes.
   
   Destructors likely have the opposite problem.  The probably try to execute some kernel logic in user mode?  Obviously this needs to be investigated further.
   


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