发布时间: 2024年9月3日
修改时间: 2024年9月14日
In the Linux kernel, the following vulnerability has been resolved:cachefiles: add missing lock protection when pollingAdd missing lock protection in poll routine when iterating xarray,otherwise:Even with RCU read lock held, only the slot of the radix tree isensured to be pinned there, while the data structure (e.g. structcachefiles_req) stored in the slot has no such guarantee. The pollroutine will iterate the radix tree and dereference cachefiles_reqaccordingly. Thus RCU read lock is not adequate in this case andspinlock is needed here.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 5.5 | 5.5 |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality | None | None |
| Integrity | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-3592 | In the Linux kernel, the following vulnerability has been resolved:cachefiles: add missing lock protection when pollingAdd missing lock protection in poll routine when iterating xarray,otherwise:Even with RCU read lock held, only the slot of the radix tree isensured to be pinned there, while the data structure (e.g. structcachefiles_req) stored in the slot has no such guarantee. The pollroutine will iterate the radix tree and dereference cachefiles_reqaccordingly. Thus RCU read lock is not adequate in this case andspinlock is needed here. | 2024年9月3日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-5A | kernel | Unaffected |
| KY3.5.2 | kernel | Unaffected |
| V6 | kernel | Fixed |
