CVE-2017-7228

An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.

An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.

Un problema (conocido como XSA-212) ha sido descubierto en Xen, con arreglos disponibles para 4.8.x, 4.7.x, 4.6.x, 4.5.x, y 4.4.x. La anterior corrección XSA-29 introdujo una comprobación insuficiente en la entrada XENMEM_exchange, dando permiso a la persona que llama para conducir accesos de memoria de hipervisor fuera de las matrices de entrada/salida proporcionadas por el huésped.