CVE-2023-54092

HighCVSS 8.8/10Last modified Oct 15, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

KVM: s390: pv: fix index value of replaced ASCE

The index field of the struct page corresponding to a guest ASCE should be 0. When replacing the ASCE in s390_replace_asce(), the index of the new ASCE should also be set to 0.

Having the wrong index might lead to the wrong addresses being passed around when notifying pte invalidations, and eventually to validity intercepts (VM crash) if the prefix gets unmapped and the notifier gets called with the wrong address.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published
Dec 24, 2025
Last modified
Oct 15, 2026
NVD status
Deferred

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CVE-2023-54092: High severity, CVSS 8.8 | Vulnix