On 2/27/17 4:07 PM, Cong Wang wrote:
> Andrey reported a NULL pointer deref bug in ipv6_route_ioctl()
> -> ip6_route_del() -> __ip6_del_rt_siblings() code path. This is
> because ip6_null_entry is returned in this path since ip6_null_entry
> is kinda default for a ipv6 route table root node. Quote from
Missed this earlier. The issue here is an attempt to delete the NULL
route, not that the null_entry is being returned as happens during a
route lookup. This will also hit the bug:
ip -6 ro del ::/0
