!1737 ksmbd: fix out of bounds read in smb2_sess_setup

Merge Pull Request from: @ci-robot 
 
PR sync from: Li Nan <linan122@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BK3WNMWIWF7LUE5WR6V4SB366MLOBVAY/ 
 
https://gitee.com/openeuler/kernel/issues/I7SVRC 
 
Link:https://gitee.com/openeuler/kernel/pulls/1737

 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>