src/java.desktop/share/classes/com/sun/imageio/plugins/jpeg/JPEGMetadata.java

@@ -872,17 +872,17 @@
                 hasAlpha = true;
             }
             return chroma;
         }
 
-        boolean idsAreJFIF = true;
+        boolean idsAreJFIF = false;
 
-        for (int i = 0; i < sof.componentSpecs.length; i++) {
-            int id = sof.componentSpecs[i].componentId;
-            if ((id < 1) || (id >= sof.componentSpecs.length)) {
-                idsAreJFIF = false;
-            }
+        int cid0 = sof.componentSpecs[0].componentId;
+        int cid1 = sof.componentSpecs[1].componentId;
+        int cid2 = sof.componentSpecs[2].componentId;
+        if ((cid0 == 1) && (cid1 == 2) && (cid2 == 3)) {
+            idsAreJFIF = true;
         }
 
         if (idsAreJFIF) {
             csType.setAttribute("name", "YCbCr");
             if (numChannels == 4) {