From ee10d591e683ab82db2ec68cb90265a0cc089e93 Mon Sep 17 00:00:00 2001 From: _xeroxz Date: Tue, 23 Feb 2021 22:50:30 +0000 Subject: [PATCH] Update README.md --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 34202e0..9f11494 100644 --- a/README.md +++ b/README.md @@ -92,7 +92,7 @@ push rax changing IA32_LSTAR to a ROP chain as described above will work just fine on CPU's that done support SMAP. Windows 10 will use SMAP if your CPU supports it. This means RSP is unaccessable since it is a user controlled page. -### SMAP - Supervisor Mode Access Prevention +### SMAP - Supervisor Mode Access Prevention (Win10 19H1 and up...) SMAP or Supervisor Mode Access Prevention is a CPU protection which prevents accessing data controlled by a higher CPL. In other words, if SMAP is set in CR4, a logical processor executing kernel code cannot access usermode controlled pages (user supervisor).