diff --git a/dist/types/icns.js b/dist/types/icns.js
index f2bfafef3723cb423b110304815e56e3f97f81e0..87e0b73af9d789c3b9b5fb0c303fab35b62d6462 100644
--- a/dist/types/icns.js
+++ b/dist/types/icns.js
@@ -92,6 +92,9 @@ exports.ICNS = {
         };
         while (imageOffset < fileLength && imageOffset < inputLength) {
             imageHeader = readImageHeader(input, imageOffset);
+            if (imageHeader[1] <= 0) {
+                break;
+            }
             imageSize = getImageSize(imageHeader[0]);
             imageOffset += imageHeader[1];
             result.images.push(imageSize);
diff --git a/dist/types/jxl.js b/dist/types/jxl.js
index f557b0aea7e679d2cb84d9915e957dd2254eba97..3f551b98cb7160dff283dd7ebbc9280505d3ac3c 100644
--- a/dist/types/jxl.js
+++ b/dist/types/jxl.js
@@ -24,7 +24,11 @@ function extractPartialStreams(input) {
         if (!jxlpBox)
             break;
         partialStreams.push(input.slice(jxlpBox.offset + 12, jxlpBox.offset + jxlpBox.size));
-        offset = jxlpBox.offset + jxlpBox.size;
+        const nextOffset = jxlpBox.offset + jxlpBox.size;
+        if (nextOffset <= offset) {
+            break;
+        }
+        offset = nextOffset;
     }
     return partialStreams;
 }