发布时间: 2022年8月5日
修改时间: 2024年11月30日
In the log_replay function in the fs/ntfs3/fslog.c file, if *r_page fails to apply for memory when the log_read_rst function is invoked, the log_read_rst function returns ENOEM error. As a result, the rst_info structure in the log_replay function cannot be initialized. When kfree(rst_info.r_page) is executed, an uninitialized wild pointer is released. As a result, the memory is released again. This patch may cause crashes. In this case, the initialization function memset(info, 0, sizeof(struct restart_info)) is moved before the rst_info function is invoked and the structure is initialized.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | High | None |
| Attack Vector | Local | Local |
| CVSS评分 | 7.1 | 5.5 |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| Scope | Unchanged | Unchanged |
| Integrity | None | None |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2022-1855 | In the log_replay function in the fs/ntfs3/fslog.c file, if *r_page fails to apply for memory when the log_read_rst function is invoked, the log_read_rst function returns ENOEM error. As a result, the rst_info structure in the log_replay function cannot be initialized. When kfree(rst_info.r_page) is executed, an uninitialized wild pointer is released. As a result, the memory is released again. This patch may cause crashes. In this case, the initialization function memset(info, 0, sizeof(struct restart_info)) is moved before the rst_info function is invoked and the structure is initialized. | 2022年8月5日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | kernel | Unaffected |
| KY3.4-5 | kernel | Unaffected |
| KY3.5.1 | kernel | Unaffected |
