Add check when use *Pointer as Sd->mRight[*Pointer] to avoid out of Array bound.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7382 6f19259b-4bc3-4df7-8a09-765794883524
2009-02-01 04:48:29 +00:00
parent 3dc3861a4e
commit 29666911f7
1 changed files with 7 additions and 5 deletions
--- a/MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c
+++ b/MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c
@@ -225,11 +225,13 @@ MakeTable (
          Sd->mRight[Avail] = Sd->mLeft[Avail] = 0;
          *Pointer = Avail++;
        }
-
-        if ((Index3 & Mask) != 0) {
-          Pointer = &Sd->mRight[*Pointer];
-        } else {
-          Pointer = &Sd->mLeft[*Pointer];
+        
+        if (*Pointer < (2 * NC - 1)) {
+          if ((Index3 & Mask) != 0) {
+            Pointer = &Sd->mRight[*Pointer];
+          } else {
+            Pointer = &Sd->mLeft[*Pointer];
+          }
        }

        Index3 <<= 1;