mov ax, cs preserves bits 31:16 of eax mov eax, cs zeros bits 31:16 of eax except on Intel Quark X1000 mov rax, cs zeros bits 63:16 of rax
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Replying to @stevecheckoway @RichFelker
Oh no. It's easy to use eax by habit in a kernel. This seems exploitable.
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Replying to @sortiecat @stevecheckoway
For...? There should probably be only one instance of mov+ w/cs anywhere...
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Replying to @RichFelker @stevecheckoway
Ah wait I'm mistaken, just woke up and got confused by assembly syntax. I thought this was a long jump.
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Replying to @sortiecat @stevecheckoway
Yeah it's that awful Wintel syntax...
4:08 AM - 6 Nov 2017
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