UefiCpuPkg/MtrrLib: Fix unit test read overflow

Change conditional check to check the array index before reading the array member to prevent read past end of buffer. Signed-off-by: Michael D Kinney <[email protected]>
tianocore · Nov 11, 2024 · 171335e · 171335e
1 parent fadf4f3
commit 171335e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c b/UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c
@@ -745,7 +745,7 @@ GetNextDifferentElementInSortedArray (
   UINT64  CurrentElement;
 
   CurrentElement = Array[Index];
-  while (CurrentElement == Array[Index] && Index < Count) {
+  while ((Index < Count) && (CurrentElement == Array[Index])) {
     Index++;
   }