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    Subject[PATCH 3.16.y-ckt 058/142] af_iucv: Validate socket address length in iucv_sock_bind()
    Date
    3.16.7-ckt26 -stable review patch.  If anyone has any objections, please let me know.

    ---8<------------------------------------------------------------

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

    commit 52a82e23b9f2a9e1d429c5207f8575784290d008 upstream.

    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: Luis Henriques <luis.henriques@canonical.com>
    ---
    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 7a95fa4a3de1..f521848e26c7 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;
    \
     
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