diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c
index d79866c5f8bc51dac4cc4f3445a88f8ac1e6babf..817622f3dbb79e3f94ec5257be032ec5574185d6 100644
--- a/net/core/sock_diag.c
+++ b/net/core/sock_diag.c
@@ -90,6 +90,9 @@ int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
 		goto out;
 
 	fprog = filter->prog->orig_prog;
+	if (!fprog)
+		goto out;
+
 	flen = bpf_classic_proglen(fprog);
 
 	attr = nla_reserve(skb, attrtype, flen);