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CVE-2018-15471

Estado: ModificadaAlta (7.8)—

Se descubrió un problema en xenvif_set_hash_mapping en drivers/net/xen-netback/hash.c en el kernel de Linux hasta la versión 4.18.1, tal y como se utiliza en Xen hasta las versiones 4.11.x y otros productos. El controlador de netback de Linux permite a los frontends controlar el mapeo de las peticiones de colas de peticiones. Cuando se procesa una solicitud para establecer o cambiar este mapeo, faltaba alguna validación de entrada (por ejemplo, para un desbordamiento de un número entero) o era defectuosa, lo que llevaba al acceso OOB en el manejo de hashes.

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Un frontend malicioso o con errores puede hacer que el backend (normalmente privilegiado) haga accesos a la memoria fuera de límites, lo que puede resultar en uno o más escalados de privilegios, denegaciones de servicio (DoS) o fugas de información.

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)

Canonical — Ubuntu LinuxLinux — Linux KernelXEN — XEN

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2018-15471",
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  "lastModified": "2026-06-17T01:42:34.717",
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