internal/ops: avoid some bounds checks in decode

Signed-off-by: Egon Elbre <egonelbre@gmail.com>
2026-07-05 09:25:38 +00:00 · 2022-07-02 15:37:09 +03:00
parent f8efc9c2a6
commit e7dd180447
2 changed files with 5 additions and 4 deletions
@@ -163,9 +163,10 @@ const (
 )

 func (op *ClipOp) Decode(data []byte) {
-	if OpType(data[0]) != TypeClip {
+	if len(data) < TypeClipLen || OpType(data[0]) != TypeClip {
 		panic("invalid op")
 	}
+	data = data[:TypeClipLen]
 	bo := binary.LittleEndian
 	r := image.Rectangle{
 		Min: image.Point{