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CVE-2023-54092

Estado: AplazadaAlta (8.8)—

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

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L/PR:L) en KVM s390 que permite a usuario local causar crash de VM (DoS) o corrupción de memoria mediante manipulación de índice ASCE en paginación.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-54092",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "9d216035d173214cd33712d67d89220ef2283ebf",
              "lessThan": "8e635da0e0d3cb45e32fa79b36218fb98281bc10",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "81ea65c9aefe100a9ace3082649bd84ae7dd9764",
              "lessThan": "49a2686adddebe1ae76b4d368383208656ef6606",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "faa2f72cb3569256480c5540d242c84e99965160",
              "lessThan": "017f686bcb536ff23d49c143fdf9d1fd89a9a924",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "faa2f72cb3569256480c5540d242c84e99965160",
              "lessThan": "f1c7a776338f2ac5e34da40e58fe9f33ea390a5e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "faa2f72cb3569256480c5540d242c84e99965160",
              "lessThan": "c2fceb59bbda16468bda82b002383bff59de89ab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b5477f53e1d4de6191f50748a027251b14952eeb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "63c71e83d5b6ab8adb5fcebef977052048016957",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5.10.137",
              "lessThan": "5.10.190",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.15.61",
              "lessThan": "5.15.124",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.18.18",
              "lessThan": "5.19",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.19.2",
              "lessThan": "5.20",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "arch/s390/mm/gmap.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.190",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.124",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.43",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.4.8",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/s390/mm/gmap.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:11.073",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/017f686bcb536ff23d49c143fdf9d1fd89a9a924",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/49a2686adddebe1ae76b4d368383208656ef6606",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8e635da0e0d3cb45e32fa79b36218fb98281bc10",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c2fceb59bbda16468bda82b002383bff59de89ab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f1c7a776338f2ac5e34da40e58fe9f33ea390a5e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "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."
    }
  ],
  "lastModified": "2026-08-04T10:19:28.610",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}