diff --git a/net/core/scm.c b/net/core/scm.c
index b7ba91b..9b26463 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -156,6 +156,8 @@
 		switch (cmsg->cmsg_type)
 		{
 		case SCM_RIGHTS:
+			if (!sock->ops || sock->ops->family != PF_UNIX)
+				goto error;
 			err=scm_fp_copy(cmsg, &p->fp);
 			if (err<0)
 				goto error;