!4936 i2c: validate user data in compat ioctl

Merge Pull Request from: @ci-robot 
 
PR sync from: Hongbo Li <lihongbo22@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/DTO4CKY7UVLPYKQNYOL4W6HQ4UBPM6AU/ 
Fix CVE-2021-46934

Pavel Skripkin (1):
  i2c: validate user data in compat ioctl


-- 
2.34.1
 
https://gitee.com/src-openeuler/kernel/issues/I947SE 
 
Link:https://gitee.com/openeuler/kernel/pulls/4936

 

Reviewed-by: Zhang Jianhua <chris.zjh@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>