This commit will resolve the issue brought by r17736. Str = AllocateCopyPool (MaxLen * sizeof (CHAR16), Str1); The above using of AllocateCopyPool() will read contents out of the scope of Str1. Potential risk for Str1 allocated at the boundary of memory region. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17931 6f19259b-4bc3-4df7-8a09-765794883524