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Restrict NtVirtualMemory only to virtual memory range

This commit is contained in:
Gliniak 2020-09-16 20:10:10 +02:00
parent 801f4c2232
commit ed3512177c
1 changed files with 9 additions and 1 deletions
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10
src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
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@ -109,6 +109,9 @@ dword_result_t NtAllocateVirtualMemory(lpdword_t base_addr_ptr,
if (*base_addr_ptr != 0) {
// ignore specified page size when base address is specified.
auto heap = kernel_memory()->LookupHeap(*base_addr_ptr);
if (heap->heap_type() != HeapType::kGuestVirtual) {
return X_STATUS_INVALID_PARAMETER;
}
page_size = heap->page_size();
} else {
// Adjust size.
@ -204,7 +207,9 @@ dword_result_t NtProtectVirtualMemory(lpdword_t base_addr_ptr,
}
auto heap = kernel_memory()->LookupHeap(*base_addr_ptr);
if (heap->heap_type() != HeapType::kGuestVirtual) {
return X_STATUS_INVALID_PARAMETER;
}
// Adjust the base downwards to the nearest page boundary.
uint32_t adjusted_base =
*base_addr_ptr - (*base_addr_ptr % heap->page_size());
@ -256,6 +261,9 @@ dword_result_t NtFreeVirtualMemory(lpdword_t base_addr_ptr,
}
auto heap = kernel_state()->memory()->LookupHeap(base_addr_value);
if (heap->heap_type() != HeapType::kGuestVirtual) {
return X_STATUS_INVALID_PARAMETER;
}
bool result = false;
if (free_type == X_MEM_DECOMMIT) {
// If zero, we may need to query size (free whole region).