Commit 6c813a72 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

[IPV6]: Fix crash in ip6_del_rt 



ip6_null_entry doesn't have rt6i_table set, when trying to delete it the
kernel crashes dereferencing table->tb6_lock.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d7aba67f

net/ipv6/route.c

+3 −0
Original line number Diff line number Diff line
@@ -1223,6 +1223,9 @@ int ip6_del_rt(struct rt6_info *rt, struct nlmsghdr *nlh, void *_rtattr, struct 
	int err;

	struct fib6_table *table;



	if (rt == &ip6_null_entry)

		return -ENOENT;



	table = rt->rt6i_table;

	write_lock_bh(&table->tb6_lock);