CVE-2026-23558
| Summary |
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.
|
| Publication Date |
May 19, 2026, 11:16 p.m. |
| Registration Date |
May 20, 2026, 4:12 a.m. |
| Last Update |
May 20, 2026, 3:55 a.m. |
|
CVSS3.1 : HIGH
|
| スコア |
7.8
|
| Vector |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| 攻撃元区分(AV) |
ローカル |
| 攻撃条件の複雑さ(AC) |
高 |
| 攻撃に必要な特権レベル(PR) |
低 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更あり |
| 機密性への影響(C) |
高 |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
高 |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* |
4.0.0 |
|
|
|
Related information, measures and tools
Common Vulnerabilities List