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PACSan: Enforcing Memory Safety Based on ARM PA. (arXiv:2202.03950v1 [cs.CR])
Feb. 9, 2022, 2:20 a.m. | Yuan Li, Wende Tan, Zhizheng Lv, Songtao Yang, Mathias Payer, Ying Liu, Chao Zhang
cs.CR updates on arXiv.org arxiv.org
Memory safety is a key security property that stops memory corruption
vulnerabilities. Existing sanitizers enforce checks and catch such bugs during
development and testing. However, they either provide partial memory safety or
have overwhelmingly high performance overheads. Our novel sanitizer PACSan
enforces spatial and temporal memory safety with no false positives at low
performance overheads. PACSan removes the majority of the overheads involved in
pointer tracking by sealing metadata in pointers through ARM PA (Pointer
Authentication), and performing the memory …
More from arxiv.org / cs.CR updates on arXiv.org
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