CVE-2023-54092 (GCVE-0-2023-54092)
Vulnerability from cvelistv5
Published
2025-12-24 13:06
Modified
2025-12-24 13:06
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 9d216035d173214cd33712d67d89220ef2283ebf
Version: 81ea65c9aefe100a9ace3082649bd84ae7dd9764
Version: faa2f72cb3569256480c5540d242c84e99965160
Version: faa2f72cb3569256480c5540d242c84e99965160
Version: faa2f72cb3569256480c5540d242c84e99965160
Version: b5477f53e1d4de6191f50748a027251b14952eeb
Version: 63c71e83d5b6ab8adb5fcebef977052048016957
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{
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "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_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."
        }
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        "dateUpdated": "2025-12-24T13:06:21.092Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/8e635da0e0d3cb45e32fa79b36218fb98281bc10"
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        },
        {
          "url": "https://git.kernel.org/stable/c/c2fceb59bbda16468bda82b002383bff59de89ab"
        }
      ],
      "title": "KVM: s390: pv: fix index value of replaced ASCE",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54092",
    "datePublished": "2025-12-24T13:06:21.092Z",
    "dateReserved": "2025-12-24T13:02:52.516Z",
    "dateUpdated": "2025-12-24T13:06:21.092Z",
    "state": "PUBLISHED"
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  }
}


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