Patent · US Active

Circular shadow stack in audit mode

US11861364B2 · kind B2 · utility

0Cited by

3References

19Claims

0Family size

Inventors

Jin LIN · Seattle, US
Mehmet Iyigun · Kirkland, US
Jason Lin · Bellevue, US
Matthew John Woolman · Seattle, US

Key dates

Filing date	Jun 19, 2021
Grant date	Jan 2, 2024
Priority date	—
Expiry date	Nov 5, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/033
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Performing shadow stack functionality for a thread in an audit mode includes initiating execution of a thread at the processor. Execution of the thread includes initiating execution of executable code of an application binary as part of the thread and enabling shadow stack functionality for the thread in an audit mode. Based at least on the execution of the thread in the audit mode, at least a portion of the shadow stack is enabled to be a circular stack. In response to determining that usage of the shadow stack has reached the defined threshold, one or more currently used entries of the shadow stack are overwritten, preventing the shadow stack from overflowing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.