ghsa-g59x-v7cp-wpr9
Vulnerability from github
Published
2025-12-24 15:30
Modified
2025-12-24 15:30
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-54092"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:11Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-g59x-v7cp-wpr9",
  "modified": "2025-12-24T15:30:37Z",
  "published": "2025-12-24T15:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54092"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/017f686bcb536ff23d49c143fdf9d1fd89a9a924"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49a2686adddebe1ae76b4d368383208656ef6606"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e635da0e0d3cb45e32fa79b36218fb98281bc10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2fceb59bbda16468bda82b002383bff59de89ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1c7a776338f2ac5e34da40e58fe9f33ea390a5e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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