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af_iucv: Validate socket address length in iucv_sock_bind()

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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>
This commit is contained in:
Ursula Braun 2016-01-19 10:41:33 +01:00 committed by David S. Miller
parent ed0dfffd7d
commit 52a82e23b9
1 changed files with 3 additions and 0 deletions
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3
net/iucv/af_iucv.c
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@ -708,6 +708,9 @@ static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
if (!addr || addr->sa_family != AF_IUCV) if (!addr || addr->sa_family != AF_IUCV)
return -EINVAL; return -EINVAL;
if (addr_len < sizeof(struct sockaddr_iucv))
return -EINVAL;
lock_sock(sk); lock_sock(sk);
if (sk->sk_state != IUCV_OPEN) { if (sk->sk_state != IUCV_OPEN) {
err = -EBADFD; err = -EBADFD;