https://git.reactos.org/?p=reactos.git;a=commitdiff;h=47372e2ac9d6e6263940b2e37e5c08e5503f8965
commit 47372e2ac9d6e6263940b2e37e5c08e5503f8965 Author: Timo Kreuzer <[email protected]> AuthorDate: Tue Jul 6 13:48:52 2021 +0200 Commit: Timo Kreuzer <[email protected]> CommitDate: Sun Jul 11 21:43:07 2021 +0200 [NTOS:MM] Fix MiSetSystemCodeProtection CORE-16387 CORE-17638 Windows only makes the header RO for session space mapped drivers (win32k, dx and display drivers) --- ntoskrnl/mm/ARM3/sysldr.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/ntoskrnl/mm/ARM3/sysldr.c b/ntoskrnl/mm/ARM3/sysldr.c index d3d9669ab52..31181b69fc9 100644 --- a/ntoskrnl/mm/ARM3/sysldr.c +++ b/ntoskrnl/mm/ARM3/sysldr.c @@ -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 */
