发布时间: 2023年11月17日
修改时间: 2024年10月31日
A use-after-free vulnerability in the Linux kernel s net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | High | High |
| Attack Vector | Local | Local |
| CVSS评分 | 7.8 | 7.8 |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| Scope | Unchanged | Unchanged |
| Integrity | High | High |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-2314 | kernel security update | 2023年11月17日 |
| KylinSec-SA-2023-2316 | kernel security update | 2023年11月17日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | kernel | Fixed |
| KY3.4-5 | kernel | Fixed |
| KY3.5.1 | kernel | Fixed |
| KY3.5.2 | kernel | Fixed |
