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

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Linux / Linux	affected 9d216035d173214cd33712d67d89220ef2283ebf before 8e635da0e0d3cb45e32fa79b36218fb98281bc10; affected 81ea65c9aefe100a9ace3082649bd84ae7dd9764 before 49a2686adddebe1ae76b4d368383208656ef6606; affected faa2f72cb3569256480c5540d242c84e99965160 before 017f686bcb536ff23d49c143fdf9d1fd89a9a924; affected faa2f72cb3569256480c5540d242c84e99965160 before f1c7a776338f2ac5e34da40e58fe9f33ea390a5e; affected faa2f72cb3569256480c5540d242c84e99965160 before c2fceb59bbda16468bda82b002383bff59de89ab; affected b5477f53e1d4de6191f50748a027251b14952eeb; affected 63c71e83d5b6ab8adb5fcebef977052048016957; affected 5.10.137 before 5.10.190; affected 5.15.61 before 5.15.124; affected 5.18.18 before 5.19; affected 5.19.2 before 5.20
Linux / Linux	affected 6.0; unaffected 0 before 6.0; unaffected 5.10.190 through 5.10.; unaffected 5.15.124 through 5.15.; unaffected 6.1.43 through 6.1.; unaffected 6.4.8 through 6.4.; unaffected 6.5 through *

Vendor / product

Versions

Linux / Linux

affected 9d216035d173214cd33712d67d89220ef2283ebf before 8e635da0e0d3cb45e32fa79b36218fb98281bc10; affected 81ea65c9aefe100a9ace3082649bd84ae7dd9764 before 49a2686adddebe1ae76b4d368383208656ef6606; affected faa2f72cb3569256480c5540d242c84e99965160 before 017f686bcb536ff23d49c143fdf9d1fd89a9a924; affected faa2f72cb3569256480c5540d242c84e99965160 before f1c7a776338f2ac5e34da40e58fe9f33ea390a5e; affected faa2f72cb3569256480c5540d242c84e99965160 before c2fceb59bbda16468bda82b002383bff59de89ab; affected b5477f53e1d4de6191f50748a027251b14952eeb; affected 63c71e83d5b6ab8adb5fcebef977052048016957; affected 5.10.137 before 5.10.190; affected 5.15.61 before 5.15.124; affected 5.18.18 before 5.19; affected 5.19.2 before 5.20

Linux / Linux

affected 6.0; unaffected 0 before 6.0; unaffected 5.10.190 through 5.10.*; unaffected 5.15.124 through 5.15.*; unaffected 6.1.43 through 6.1.*; unaffected 6.4.8 through 6.4.*; unaffected 6.5 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.