[PATCH 3.2 092/115] af_iucv: Validate socket address length in iucv_sock_bind()

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.kernel
Subject	[PATCH 3.2 092/115] af_iucv: Validate socket address length in iucv_sock_bind()
Date	2016-04-27 01:40 +0200
Message-ID	<rskKd-80r-3@gated-at.bofh.it> (permalink)
References	<rskqS-7Qj-19@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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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[PATCH 3.2 092/115] af_iucv: Validate socket address length in   iucv_sock_bind() Ben Hutchings <ben@decadent.org.uk> - 2016-04-27 01:40 +0200

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