公开(公告)号：US20240320317A1

公开(公告)日：2024-09-26

申请号：US18677620

申请日：2024-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenqiang HUANG ,  Valentin MANEA ,  Jianwei ZHU

IPC: G06F21/44

CPC classification number: G06F21/44

Abstract: A kernel protection method and apparatus, and systems are provided, which relate to the field of security technologies. The method is applied to an electronic device. The method includes: working in a first privilege, and detecting a page table modification command, where the first privilege includes the first privilege, the page table modification command is used to modify access permission data in a target page table, and the target page table is a kernel-related page table; switching from the first privilege to a second privilege, and determining, under the second privilege, whether to modify the target page table based on the page table modification command, where a permission of the second privilege is higher than that of the first privilege; and modifying the access permission data in the target page table if determining to modify the target page table.