Merge branch 'master' of https://github.com/acidanthera/OpenCorePkg

Changelog.md

@@ -16,6 +16,7 @@ OpenCore Changelog
 - Added `EnableVmx` quirk to allow virtualization in other OS on some Macs
 - Upgraded `ProtectUefiServices` to prevent GRUB shim overwriting service pointers when chainloading with Secure Boot enabled
 - Removed deprecated SSDT-PNLFCFL
+- Fixed handling of zero-sized Memory Attributes Table
 
 #### v0.7.5
 - Revised OpenLinuxBoot documentation

Library/OcMemoryLib/MemoryAttributes.c

@@ -438,7 +438,7 @@ OcRebuildAttributes (
   UINT32                             DescriptorVersion;
 
   MemoryAttributesTable = OcGetMemoryAttributes (&MemoryAttributesEntry);
-  if (MemoryAttributesTable == NULL) {
+  if (MemoryAttributesTable == NULL || MemoryAttributesTable->NumberOfEntries == 0) {
     return EFI_UNSUPPORTED;
   }