CVE-2022-42335
7.8
HIGH
CVSS 3.1
EPSS 0.26%
描述
x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.
如何修補 CVE-2022-42335
要修補 CVE-2022-42335,請將受影響套件升級到下列已修補版本。
- —升級至 4.17.0-r5 或更新版本
- —升級至 4.17.1+2-gb773c48e36-1 或更新版本
CVE-2022-42335 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, < 4.17.0-r5
- from 0, < 4.17.1+2-gb773c48e36-1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |