Subject: [PATCH 01/34] af_iucv: Validate socket address length in iucv_sock_bind()

From: Ursula Braun <[email-masked]>
Date: Tue, 19 Jan 2016 10:41:33 +0100

[ Upstream commit 52a82e23b9f2a9e1d429c5207f8575784290d008 ]

Signed-off-by: Ursula Braun <[email-masked]>
Reported-by: Dmitry Vyukov <[email-masked]>
Reviewed-by: Evgeny Cherkashin <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
---
 net/iucv/af_iucv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 6daa52a..123f6f9 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -709,6 +709,9 @@ static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
 	if (!addr || addr->sa_family != AF_IUCV)
 		return -EINVAL;
 
+	if (addr_len < sizeof(struct sockaddr_iucv))
+		return -EINVAL;
+
 	lock_sock(sk);
 	if (sk->sk_state != IUCV_OPEN) {
 		err = -EBADFD;
-- 
2.4.1