{"id":"CVE-2023-54092","title":"KVM: s390: pv: fix index value of replaced ASCE","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pv: fix index value of replaced ASCE\n\nThe index field of the struct page corresponding to a guest ASCE should\nbe 0. When replacing the ASCE in s390_replace_a…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 9d216035d173214cd33712d67d89220ef2283ebf < 8e635da0e0d3cb45e32fa79b36218fb98281bc10","Linux >= 81ea65c9aefe100a9ace3082649bd84ae7dd9764 < 49a2686adddebe1ae76b4d368383208656ef6606","Linux >= faa2f72cb3569256480c5540d242c84e99965160 < 017f686bcb536ff23d49c143fdf9d1fd89a9a924","Linux >= faa2f72cb3569256480c5540d242c84e99965160 < f1c7a776338f2ac5e34da40e58fe9f33ea390a5e","Linux >= faa2f72cb3569256480c5540d242c84e99965160 < c2fceb59bbda16468bda82b002383bff59de89ab","Linux b5477f53e1d4de6191f50748a027251b14952eeb","Linux 63c71e83d5b6ab8adb5fcebef977052048016957","Linux >= 5.10.137 < 5.10.190","Linux >= 5.15.61 < 5.15.124","Linux >= 5.18.18 < 5.19","Linux >= 5.19.2 < 5.20","Linux 6.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:38:20.518456Z"},"published":"2025-12-24","updated":"2026-10-15","sourceUpdated":"2026-10-15T21:41:39.384Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54092","references":[{"url":"https://git.kernel.org/stable/c/8e635da0e0d3cb45e32fa79b36218fb98281bc10"},{"url":"https://git.kernel.org/stable/c/49a2686adddebe1ae76b4d368383208656ef6606"},{"url":"https://git.kernel.org/stable/c/017f686bcb536ff23d49c143fdf9d1fd89a9a924"},{"url":"https://git.kernel.org/stable/c/f1c7a776338f2ac5e34da40e58fe9f33ea390a5e"},{"url":"https://git.kernel.org/stable/c/c2fceb59bbda16468bda82b002383bff59de89ab"}],"tags":["cve.org"],"epss":0.00219,"epssPercentile":0.11473,"ingestedAt":"2026-10-15T22:48:25.429Z","slug":"CVE-2023-54092","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pv: fix index value of replaced ASCE\n\nThe index field of the struct page corresponding to a guest ASCE should\nbe 0. When replacing the ASCE in s390_replace_asce(), the index of the\nnew ASCE should also be set to 0.\n\nHaving the wrong index might lead to the wrong addresses being passed\naround when notifying pte invalidations, and eventually to validity\nintercepts (VM crash) if the prefix gets unmapped and the notifier gets\ncalled with the wrong address.\n\n## Affected\n\n- `Linux >= 9d216035d173214cd33712d67d89220ef2283ebf < 8e635da0e0d3cb45e32fa79b36218fb98281bc10`\n- `Linux >= 81ea65c9aefe100a9ace3082649bd84ae7dd9764 < 49a2686adddebe1ae76b4d368383208656ef6606`\n- `Linux >= faa2f72cb3569256480c5540d242c84e99965160 < 017f686bcb536ff23d49c143fdf9d1fd89a9a924`\n- `Linux >= faa2f72cb3569256480c5540d242c84e99965160 < f1c7a776338f2ac5e34da40e58fe9f33ea390a5e`\n- `Linux >= faa2f72cb3569256480c5540d242c84e99965160 < c2fceb59bbda16468bda82b002383bff59de89ab`\n- `Linux b5477f53e1d4de6191f50748a027251b14952eeb`\n- `Linux 63c71e83d5b6ab8adb5fcebef977052048016957`\n- `Linux >= 5.10.137 < 5.10.190`\n- `Linux >= 5.15.61 < 5.15.124`\n- `Linux >= 5.18.18 < 5.19`\n- `Linux >= 5.19.2 < 5.20`\n- `Linux 6.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}