CVE-2021-28706
8.6
HIGH
CVSS 3.1
EPSS 2.1%
描述
guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound.
如何修補 CVE-2021-28706
要修補 CVE-2021-28706,請將受影響套件升級到下列已修補版本。
- —升級至 4.13.4-r2 或更新版本
CVE-2021-28706 正在被利用嗎?
低 — EPSS 為 2.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 3.2, < 4.13.4-r2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |