rose: Fix rose_getname() leak

commit 17ac2e9c58b69a1e25460a568eae1b0dc0188c25 upstream.

rose_getname() can leak kernel memory to user.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 877a7f65f707fa53688a4d7b349b58bcc84fcf2f..ebe1cc920743e4a824c3a128f4ee0e1b45cbe3e8 100644 (file)
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -957,6 +957,7 @@ static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
        struct rose_sock *rose = rose_sk(sk);
        int n;
 
+       memset(srose, 0, sizeof(*srose));
        if (peer != 0) {
                if (sk->sk_state != TCP_ESTABLISHED)
                        return -ENOTCONN;