CVE-2026-23558
7.8
HIGH
CVSS 3.1
EPSS 0.12%
描述
The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status page(s) via XENMEM_add_to_physmap. Some of the status pages may then be freed while mappings of them would still be inserted into the guest's secondary (P2M) page tables.
如何修補 CVE-2026-23558
要修補 CVE-2026-23558,請將受影響套件升級到下列已修補版本。
- —升級至 4.18.5-r7 或更新版本
CVE-2026-23558 正在被利用嗎?
低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 4.0.0, < 4.18.5-r7
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:H/PR:L/UI:N/S:C/C:H/I:H/A:H |