diff --git a/src/MESA_jump_layer.cpp b/src/MESA_jump_layer.cpp
index 0803aa8..f91f1c0 100644
--- a/src/MESA_jump_layer.cpp
+++ b/src/MESA_jump_layer.cpp
@@ -389,6 +389,10 @@ static int __mjl_parse_l2tpv2_hdr(const struct l2tp_hdr_v2 *pl2tphdrv2, struct l
 
 	if(pl2tphdrv2->offset_present){
 		offset_size = ntohs(*((unsigned short *)ptr));
+		if(offset_size > 1460)
+		{
+			return -1;
+		}
 		ptr += sizeof(short);	 /* 2 byte fix len offset size */
 		ptr += offset_size;  /* var bytes offset value length */
 	}