Red Hat Security Advisory 2015-2315-01 - NetworkManager is a system network service that manages network devices and connections. It was discovered that NetworkManager would set device MTUs based on MTU values received in IPv6 RAs, without sanity checking the MTU value first. A remote attacker could exploit this flaw to create a denial of service attack, by sending a specially crafted IPv6 RA packet to disturb IPv6 communication. A flaw was found in the way NetworkManager handled router advertisements. An unprivileged user on a local network could use IPv6 Neighbor Discovery ICMP to broadcast a non-route with a low hop limit, causing machines to lower the hop limit on existing IPv6 routes. If this limit is small enough, IPv6 packets would be dropped before reaching the final destination.
9bededbe927f0a591fc181a4af27a88f98de6fb87115ad57c30589c4ec04517dGentoo Linux Security Advisory 201509-5 - Improper handling of Router Advertisements in NetworkManager could cause a Denial of Service condition in IPv6 network stacks. Versions less than 1.0.2 are affected.
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