Patents by Inventor Khalid Nawaf AlHarbi

Khalid Nawaf AlHarbi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preventing stack buffer overflow attacks
    Publication number: 20160098556
    Abstract: Improved buffer overflow protection for a computer function call stack is provided by placing a predetermined ShadowKEY value on a function's call stack frame and copying the ShadowKEY, a caller EBP, and a return pointer are pushed onto a duplicate stack. The prologue of the function may be modified for this purpose. The function epilogue is modified to compare the current values of the ShadowKEY, caller EBP, and the return pointer on the function stack to the copies stored on the duplicate stack. If they are not identical, an overflow is detected. The preserved copies of these values may be copied back to the function stack frame thereby enabling execution of the process to continue. A function prologue and epilogue may be modified during compilation of the program.
    Type: Application
    Filed: December 15, 2015
    Publication date: April 7, 2016
    Inventors: Khalid Nawaf ALHARBI, Xiaodong LIN
  • Preventing stack buffer overflow attacks
    Patent number: 9251373
    Abstract: Improved buffer overflow protection for a computer function call stack is provided by placing a predetermined ShadowKEY value on a function's call stack frame and copying the ShadowKEY, a caller EBP, and a return pointer are pushed onto a duplicate stack. The prologue of the function may be modified for this purpose. The function epilogue is modified to compare the current values of the ShadowKEY, caller EBP, and the return pointer on the function stack to the copies stored on the duplicate stack. If they are not identical, an overflow is detected. The preserved copies of these values may be copied back to the function stack frame thereby enabling execution of the process to continue. A function prologue and epilogue may be modified during compilation of the program.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 2, 2016
    Inventors: Khalid Nawaf AlHarbi, Xiaodong Lin
  • Preventing stack buffer overflow attacks
    Publication number: 20140283088
    Abstract: Improved buffer overflow protection for a computer function call stack is provided by placing a predetermined ShadowKEY value on a function's call stack frame and copying the ShadowKEY, a caller EBP, and a return pointer are pushed onto a duplicate stack. The prologue of the function may be modified for this purpose. The function epilogue is modified to compare the current values of the ShadowKEY, caller EBP, and the return pointer on the function stack to the copies stored on the duplicate stack. If they are not identical, an overflow is detected. The preserved copies of these values may be copied back to the function stack frame thereby enabling execution of the process to continue. A function prologue and epilogue may be modified during compilation of the program.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Khalid Nawaf AlHarbi, Xiaodong Lin