Fix denial of service - memory corruption.

[samba.git] / source3 / client / client.c

diff --git a/source3/client/client.c b/source3/client/client.c
index b7065916b95676a3946f50407a81701e3b6e908d..1e5e8e1acb3cdae326b574fe062c93646e82e53f 100644 (file)
--- a/source3/client/client.c
+++ b/source3/client/client.c
@@ -4384,8 +4384,10 @@ static void readline_callback(void)
 
  again:
 
-       if (cli->fd == -1)
+       if (cli->fd < 0 || cli->fd >= FD_SETSIZE) {
+               errno = EBADF;
                return;
+       }
 
        FD_ZERO(&fds);
        FD_SET(cli->fd,&fds);