1 files changed, 2 insertions, 1 deletions
diff --git a/java/src/com/google/typography/font/sfntly/data/ReadableFontData.java b/java/src/com/google/typography/font/sfntly/data/ReadableFontData.java
index 2561703..ad7894c 100644
--- a/java/src/com/google/typography/font/sfntly/data/ReadableFontData.java
+++ b/java/src/com/google/typography/font/sfntly/data/ReadableFontData.java
@@ -150,7 +150,8 @@ public class ReadableFontData extends FontData {
    */
   @Override
   public ReadableFontData slice(int offset, int length) {
-    if (offset < 0 || (offset + length) > this.size()) {
+    if (offset < 0 || length < 0 || offset > Integer.MAX_VALUE - length ||
+        (offset + length) > this.size()) {
       throw new IndexOutOfBoundsException("Attempt to bind data outside of its limits.");
     }
     ReadableFontData slice = new ReadableFontData(this, offset, length);