routing/route: enforce Vertex TLV length in decoder

erickcestari · erickcestari · commit 50271ec5b799 · 2025-09-25T17:42:15.000-03:00
diff --git a/routing/route/route.go b/routing/route/route.go
@@ -112,7 +112,7 @@ func encodeVertex(w io.Writer, val interface{}, _ *[8]byte) error {
 }
 
 func decodeVertex(r io.Reader, val interface{}, _ *[8]byte, l uint64) error {
-	if b, ok := val.(*Vertex); ok {
+	if b, ok := val.(*Vertex); ok && l == VertexSize {
 		_, err := io.ReadFull(r, b[:])
 		return err
 	}

Original file line number	Diff line number	Diff line change
`@@ -112,7 +112,7 @@ func encodeVertex(w io.Writer, val interface{}, _ *[8]byte) error {`
`112`	`112`	`}`
`113`	`113`
`114`	`114`	`func decodeVertex(r io.Reader, val interface{}, _ *[8]byte, l uint64) error {`
`115`		`- if b, ok := val.(*Vertex); ok {`
	`115`	`+ if b, ok := val.(*Vertex); ok && l == VertexSize {`
`116`	`116`	`_, err := io.ReadFull(r, b[:])`
`117`	`117`	`return err`
`118`	`118`	`}`