High 8.8Published Dec 24, 2025

CVE-2023-54092KVM: s390: pv: fix index value of replaced ASCE

Updated under an hour ago (Oct 27, 2026, 4:30 AM ET)

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Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	9d216035d173214cd33712d67d89220ef2283ebf builds before 8e635da0e0d3cb45e32fa79b36218fb98281bc10; 81ea65c9aefe100a9ace3082649bd84ae7dd9764 builds before 49a2686adddebe1ae76b4d368383208656ef6606; from faa2f72cb3569256480c5540d242c84e99965160 before 017f686bcb536ff23d49c143fdf9d1fd89a9a924; from faa2f72cb3569256480c5540d242c84e99965160 before f1c7a776338f2ac5e34da40e58fe9f33ea390a5e; from faa2f72cb3569256480c5540d242c84e99965160 before c2fceb59bbda16468bda82b002383bff59de89ab; b5477f53e1d4de6191f50748a027251b14952eeb; 63c71e83d5b6ab8adb5fcebef977052048016957; from 5.10.137 before 5.10.190; and 3 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/8e635da0e0d3cb45e32fa79b36218fb98281bc10
https://git.kernel.org/stable/c/49a2686adddebe1ae76b4d368383208656ef6606
https://git.kernel.org/stable/c/017f686bcb536ff23d49c143fdf9d1fd89a9a924
https://git.kernel.org/stable/c/f1c7a776338f2ac5e34da40e58fe9f33ea390a5e
https://git.kernel.org/stable/c/c2fceb59bbda16468bda82b002383bff59de89ab

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.