What is CVE-2023-54092?

CVE-2023-54092 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2025-12-24.

How severe is CVE-2023-54092?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Linux

CVE-2023-54092

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.

EPSS: 0.002 (12.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Linux — versions 5.15.124, faa2f72cb3569256480c5540d242c84e99965160, 6.1.43

References

Frequently asked questions

What is CVE-2023-54092?: CVE-2023-54092 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2025-12-24.
How severe is CVE-2023-54092?: High severity. CVSS v3 base score is 8.8 out of 10.