CVE-2018-10853

Estado: ModificadaAlta (7.8)—
Se ha encontrado un error en la forma en la que el hipervisor KVM del kernel de Linux en versiones anteriores a la 4.18 emulaba instrucciones como sgdt/sidt/fxsave/fxrstor. No comprobó el nivel de privilegios actual (CPL) al emular instrucciones sin privilegios. Un usuario invitado o un proceso sin privilegios podrían emplear este error para escalar sus privilegios en el invitado.
CVSS

Versión: 3.0
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.47%
Percentil entre todas las CVEs puntuadas: 39
Fecha de la puntuación: 9/10/2026
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).
Tecnologías afectadas (3)

Canonical — Ubuntu Linux Debian — Debian Linux Linux — Linux Kernel
CWE

CWE-250
CWE-269
Referencias

JSON original (NVD)

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  "id": "CVE-2018-10853",
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  "published": "2018-09-11T14:29:01.630",
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-250"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un error en la forma en la que el hipervisor KVM del kernel de Linux en versiones anteriores a la 4.18 emulaba instrucciones como sgdt/sidt/fxsave/fxrstor. No comprobó el nivel de privilegios actual (CPL) al emular instrucciones sin privilegios. Un usuario invitado o un proceso sin privilegios podrían emplear este error para escalar sus privilegios en el invitado."
    }
  ],
  "lastModified": "2026-06-17T01:34:45.953",
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