CVE-2020-29570
6.2
MEDIUM
CVSS 3.1
EPSS 0.37%
描述
An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.
如何修補 CVE-2020-29570
要修補 CVE-2020-29570,請將受影響套件升級到下列已修補版本。
- —升級至 4.13.2-r3 或更新版本
CVE-2020-29570 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 4.4.0, < 4.13.2-r3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |