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kernelbase: Don't use WRITECOPY protection on anonymous mappings.

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This commit is contained in:
Alexandre Julliard 2024-06-19 21:00:46 +02:00
parent 0a83c4f287
commit 2ac86fb8c3
1 changed files with 2 additions and 1 deletions
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3
dlls/kernelbase/memory.c
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@ -604,7 +604,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH WriteProcessMemory( HANDLE process, void *addr, co
SIZE_T size, SIZE_T *bytes_written )
{
CROSS_PROCESS_WORK_LIST *list = open_cross_process_connection( process );
DWORD old_prot, prot = PAGE_TARGETS_NO_UPDATE | PAGE_ENCLAVE_NO_CHANGE | PAGE_EXECUTE_WRITECOPY;
DWORD old_prot, prot = PAGE_TARGETS_NO_UPDATE | PAGE_ENCLAVE_NO_CHANGE;
MEMORY_BASIC_INFORMATION info;
void *base_addr;
SIZE_T region_size;
@ -634,6 +634,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH WriteProcessMemory( HANDLE process, void *addr, co
base_addr = ROUND_ADDR( addr );
region_size = ROUND_SIZE( addr, size );
region_size = min( region_size, (char *)info.BaseAddress + info.RegionSize - (char *)base_addr );
prot |= (info.Type == MEM_PRIVATE) ? PAGE_EXECUTE_READWRITE : PAGE_EXECUTE_WRITECOPY;
send_cross_process_notification( list, CrossProcessPreVirtualProtect,
base_addr, region_size, 1, prot );