FmpDevicePkg/FmpDependencyLib: Fix potential overflow in loop

FmpVersionsCount is a UINTN while the loop index variable compared against it is a UINT8. This can lead to an overflow of the loop index for FmpVersionsCount values larger than UINT8_MAX. This change makes Index a UINTN to match in width. Signed-off-by: Michael Kubacki <[email protected]>
zurcher · Oct 9, 2024 · 06da7da · 06da7da
1 parent 550c38a
commit 06da7da
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/FmpDevicePkg/Library/FmpDependencyLib/FmpDependencyLib.c b/FmpDevicePkg/Library/FmpDependencyLib/FmpDependencyLib.c
@@ -228,7 +228,7 @@ EvaluateDependency (
 {
   EFI_STATUS     Status;
   UINT8          *Iterator;
-  UINT8          Index;
+  UINTN          Index;
   DEPEX_ELEMENT  Element1;
   DEPEX_ELEMENT  Element2;
   GUID           ImageTypeId;