Apparatus and method for detecting violation of control flow integrity
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United States of America Patent
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Jul 16, 2024
Grant Date -
Aug 25, 2022
app pub date -
Nov 3, 2021
filing date -
Feb 19, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed herein are an apparatus and method for detecting violation of control flow integrity. The apparatus includes memory for storing a program and a processor for executing the program, wherein the processor multiple branch identifier registers to which identifiers of branch targets are written, a set branch identifier instruction configured to command an identifier of a branch target to be written to a branch identifier register at a predetermined sequence number, among the multiple branch identifier registers, and a check branch identifier instruction configured to command a signal indicating detection of a control flow hijacking attack to be issued based on whether a value written to the branch identifier register at the predetermined sequence number is identical to a value of an identifier of a branch target at the predetermined sequence number, wherein the program detects whether a control flow is hijacked based on the multiple branch identifier registers.
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