!2440 netfilter: xt_u32: validate user space input

Merge Pull Request from: @ci-robot 
 
PR sync from: Lu Wei <luwei32@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/RU7H7RGBWAJ6RNJXESOI2NEXUD2IMGLP/ 
 
https://gitee.com/src-openeuler/kernel/issues/I85CAT 
 
Link:https://gitee.com/openeuler/kernel/pulls/2440

 

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