CVE-2011-3188

Las implementaciones de (1) IPv4 y (2) IPv6 en el kernel de Linux antes de v3.1 utiliza una versión modificada de algoritmo MD4 para generar números de secuencia y valores de los fragmentos de identificación, lo que hace que sea más fácil para los atacantes remotos causar una denegación de servicio (red interrumpida) o secuestrar sesiones de red mediante la predicción de estos valores y el envío de paquetes manipulados.

An updated rhev-hypervisor package that fixes several security issues is now available. The RHBA-2011:1254 update introduced a regression in the Linux kernel's Ethernet bridge implementation. If a system had an interface in a bridge, and an attacker on the local network could send packets to that interface, they could cause a denial of service on that system. A flaw in the Linux kernel could lead to GRO (Generic Receive Offload) fields being left in an inconsistent state. An attacker on the local network could use this flaw to trigger a denial of service. GRO is enabled by default in all network drivers that support it. Various other issues have also been addressed.