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CVE-2022-1158

Estado: ModificadaAlta (7.8)—

Se ha encontrado un fallo en KVM. Cuando era actualizada la entrada de la tabla de páginas de un huésped, vm_pgoff era usado incorrectamente como desplazamiento para obtener el pfn de la página. Como vaddr y vm_pgoff son controlables por procesos en modo usuario, este fallo permite a usuarios locales no privilegiado en el host escribir fuera de la región del espacio de usuario y potencialmente corromper el kernel, resultando en una condición de denegación de servicio

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).

Tecnologías afectadas (3)

Fedoraproject — FedoraLinux — Linux KernelRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-1158",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 1.8
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  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "kernel",
          "versions": [
            {
              "status": "affected",
              "version": "kernel 5.18"
            }
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  ],
  "published": "2022-08-05T17:15:08.017",
  "references": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2069793",
      "tags": [
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        "Issue Tracking",
        "Third Party Advisory"
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      "source": "secalert@redhat.com"
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      "tags": [
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      "source": "secalert@redhat.com"
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      "source": "secalert@redhat.com"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
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          "lang": "en",
          "value": "CWE-416"
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      "source": "nvd@nist.gov",
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          "lang": "en",
          "value": "CWE-416"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo en KVM. Cuando era actualizada la entrada de la tabla de páginas de un huésped, vm_pgoff era usado incorrectamente como desplazamiento para obtener el pfn de la página. Como vaddr y vm_pgoff son controlables por procesos en modo usuario, este fallo permite a usuarios locales no privilegiado en el host escribir fuera de la región del espacio de usuario y potencialmente corromper el kernel, resultando en una condición de denegación de servicio"
    }
  ],
  "lastModified": "2026-06-17T04:21:55.340",
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