Fix possible infinite loop during SVG sanitization

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 ### Fix
 - Fix false-positive SVG detections.
+- Fix possible infinite loop during SVG sanitization.
 - (pro) Fix saving of GIF with variable frame delay to MP4.
 
 ## [3.9.0] - 2022-10-19

svg/svg.go

@@ -40,6 +40,9 @@ func Satitize(data *imagedata.ImageData) (*imagedata.ImageData, error) {
 
 		if ignoreTag > 0 {
 			switch tt {
+			case xml.ErrorToken:
+				cancel()
+				return nil, l.Err()
 			case xml.EndTagToken, xml.StartTagCloseVoidToken:
 				ignoreTag--
 			case xml.StartTagToken: