CVE-2022-33744
4.7
MEDIUM
CVSS 3.1
EPSS 0.31%
描述
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.
如何修補 CVE-2022-33744
要修補 CVE-2022-33744,請將受影響套件升級到下列已修補版本。
- —升級至 4.15.4-r0 或更新版本
- —升級至 5.10.127-2 或更新版本
CVE-2022-33744 正在被利用嗎?
低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 4.15.4-r0
- from 0, < 5.10.127-2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |