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nvd-json-data-feeds/CVE-2018/CVE-2018-168xx/CVE-2018-16882.json
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{
"id": "CVE-2018-16882",
"sourceIdentifier": "secalert@redhat.com",
"published": "2019-01-03T16:29:00.303",
"lastModified": "2024-11-21T03:53:31.467",
"vulnStatus": "Modified",
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"lang": "en",
"value": "A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable."
},
{
"lang": "es",
"value": "Se ha detectado un uso de memoria previamente liberada en la manera en la que el hypervisor KVM del kernel de Linux procesa las interrupciones publicadas cuando la virtualizaci\u00f3n \"nested(=1)\" se encuentra habilitada. En caso de que se produzca un error durante el procesamiento de las direcciones de las interrupciones publicadas, nested_get_vmcs12_pages() desmapea \"pi_desc_page\" sin restablecer la direcci\u00f3n del descriptor \"pi_desc\", la cual se utiliza posteriormente en pi_test_and_clear_on(). Un usuario invitado/proceso podr\u00eda aprovechar este fallo para forzar un cierre inesperado en el kernel del host, lo que resultar\u00eda en DoS o en el acceso privilegiado a un sistema. Las versiones del kernel anteriores a la 4.14.91 y la 4.19.13 son vulnerables."
}
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