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[NTOS:MM] Fix MiSetSystemCodeProtection

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CORE-16387 CORE-17638
Windows only makes the header RO for session space mapped drivers (win32k, dx and display drivers)
This commit is contained in:
Timo Kreuzer 2021-07-06 13:48:52 +02:00
parent ccde294b24
commit 47372e2ac9
1 changed files with 3 additions and 3 deletions
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6
ntoskrnl/mm/ARM3/sysldr.c
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@ -2486,13 +2486,13 @@ MiWriteProtectSystemImage(
/* Get the base address of the first section */
SectionBase = Add2Ptr(ImageBase, SectionHeaders[0].VirtualAddress);
/* Start protecting the image header as R/O */
/* Start protecting the image header as R/W */
FirstPte = MiAddressToPte(ImageBase);
LastPte = MiAddressToPte(SectionBase) - 1;
Protection = IMAGE_SCN_MEM_READ;
Protection = IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE;
if (LastPte >= FirstPte)
{
MiSetSystemCodeProtection(FirstPte, LastPte, IMAGE_SCN_MEM_READ);
MiSetSystemCodeProtection(FirstPte, LastPte, Protection);
}
/* Loop the sections */