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Windows 17035 Kernel ASLR/VA Isolation In Practice (like Linux KAISER). First screenshot shows how NtCreateFile is not mapped in the kernel region of the user CR3. Second screenshot shows how a 'shadow' kernel trap handler, is (has to be).pic.twitter.com/7PriLIJHe1
One of the interesting things about this new feature is that user-mode PTEs are now marked as "global", preventing their flushing from TLB on process switch. Presumably because the OS can now do more targeted manual flushing as well as use PCID/PASID.
Wasn't Kaiser shown to be ineffective and with a rather large cost to syscalls?
Source? :-)
Aaaand I got today's reading g set out for me
Surprise surprise :)
cant wait to the OS be 50% slower!!
Fonts are now userspace and appcontainerized. Shit is getting real/hard/real hard.
*joke about real mode vs protected mode*
awesome!
Nice find !
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