!6521 netfilter: nf_conntrack_h323: Add protection for bmp length out of range

Merge Pull Request from: @ci-robot 
 
PR sync from: Yang Yingliang <yangyingliang@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/UQYUTPK4GNG4C3CTJU5ZQAUBXAXEWAZ5/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9HKAZ 
 
Link:https://gitee.com/openeuler/kernel/pulls/6521

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>