发布时间: 2023年1月13日
修改时间: 2024年10月31日
A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past commit 2e7eab81425a
| NVD | openEuler | |
|---|---|---|
| Confidentiality | High | Low |
| Attack Vector | Local | Local |
| CVSS评分 | 8.8 | 3.3 |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| Scope | Changed | Unchanged |
| Integrity | High | None |
| User Interaction | None | None |
| Availability | High | None |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-2072 | kernel security update | 2023年1月13日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.5.2 | kernel | Fixed |
| KY3.5.1 | kernel | Fixed |
