Mitigate bad ifd offset.

brendan-duncan · Jan 10, 2024 · b595362 · b595362
1 parent c4a8783
commit b595362
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/lib/src/exif/exif_data.dart b/lib/src/exif/exif_data.dart
@@ -286,7 +286,12 @@ class ExifData extends IfdContainer {
  directories['ifd$index'] = directory;
  index++;
 
- ifdOffset = block.readUint32();
+ final nextIfdOffset = block.readUint32();
+ if (nextIfdOffset == ifdOffset) {
+ break;
+ } else {
+ ifdOffset = nextIfdOffset;
+ }
  }
 
  const subTags = {