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Subject[PATCH 3.2 092/115] af_iucv: Validate socket address length in iucv_sock_bind()
3.2.80-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ursula Braun <ursula.braun@de.ibm.com>

[ Upstream commit 52a82e23b9f2a9e1d429c5207f8575784290d008 ]

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Evgeny Cherkashin <Eugene.Crosser@ru.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/iucv/af_iucv.c | 3 +++
1 file changed, 3 insertions(+)

--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -708,6 +708,9 @@ static int iucv_sock_bind(struct socket
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;
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