{
  "id": "CVE-2023-4155",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2023-09-13T17:15:10.143",
  "lastModified": "2024-11-21T08:34:30.017",
  "vulnStatus": "Modified",
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      "value": "A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the `VMGEXIT` handler recursively. If an attacker manages to call the handler multiple times, they can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages (`CONFIG_VMAP_STACK`)."
    },
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      "lang": "es",
      "value": "Se encontr\u00f3 una falla en KVM AMD Secure Encrypted Virtualization (SEV) en el kernel de Linux. Un invitado KVM que utilice SEV-ES o SEV-SNP con m\u00faltiples vCPU puede desencadenar una vulnerabilidad de condici\u00f3n de ejecuci\u00f3n de recuperaci\u00f3n doble e invocar el controlador \"VMGEXIT\" de forma recursiva. Si un atacante logra llamar al controlador varias veces, puede desencadenar un desbordamiento de la pila y provocar una denegaci\u00f3n de servicio o potencialmente un escape de invitado a anfitri\u00f3n en configuraciones del kernel sin p\u00e1ginas de protecci\u00f3n de la pila (`CONFIG_VMAP_STACK`)."
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