Is there any work towards enabling pointer authentication on OpenBSD? Could not find anything about it.
Pointer Authentication is a security mitigation technique against the return-oriented programming (ROP) and jump-oriented programming (JOP) attacks:
https://events.static.linuxfound.org/sites/events/files/slides/slides_23.pdf
@openbsdnow It is available I think. See pac-plt on ld(1)¹ It is AArch64 only though ²
¹ https://man.openbsd.org/ld
² https://llvm.org/docs/PointerAuth.html#aarch64-support
@openbsdnow It is certainly not set in the default flags and I could not spot it in Makefile.arm64¹ so I guess not yet.
¹https://github.com/openbsd/src/blob/master/sys/arch/arm64/conf/Makefile.arm64
OpenBSD Now!
Antonino Catinello