00464: Enable PAC and BTI protections for aarch64 #125
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I left a review upstream: python#130864 (review) |
Apply protection against ROP/JOP attacks for aarch64 on asm_trampoline.S The BTI flag must be applied in the assembler sources for this class of attacks to be mitigated on newer aarch64 processors. Upstream PR: https://github.com/python/cpython/pull/130864/files The upstream patch is incomplete but only for the case where frame pointers are not used on 3.13+. Since on Fedora we always compile with frame pointers the BTI/PAC hardware protections can be enabled without losing Perf unwinding.
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Apply protection against ROP/JOP attacks for aarch64 on asm_trampoline.S
The BTI flag must be applied in the assembler sources for this class of attacks to be mitigated on newer aarch64 processors.
Upstream PR: https://github.com/python/cpython/pull/130864/files
The upstream patch is incomplete but only for the case where frame pointers are not used on 3.13+.
Since on Fedora we always compile with frame pointers the BTI/PAC hardware protections can be enabled without losing Perf unwinding.