Unverified Commit 8f45d5b3 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!8849 ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhengchao Shao <shaozhengchao@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/JEQKDJHJ7CJZI34K6SUAODKIZJ6SNL7I/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9TM8A 
 
Link:https://gitee.com/openeuler/kernel/pulls/8849

 

Reviewed-by: default avatarYue Haibing <yuehaibing@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 2cd45815 8b6a8a76

net/ipv6/fib6_rules.c

+5 −1
Original line number Diff line number Diff line
@@ -232,8 +232,12 @@ static int __fib6_rule_action(struct fib_rule *rule, struct flowi *flp, 
	rt = pol_lookup_func(lookup,

			     net, table, flp6, arg->lookup_data, flags);

	if (rt != net->ipv6.ip6_null_entry) {

		struct inet6_dev *idev = ip6_dst_idev(&rt->dst);



		if (!idev)

			goto again;

		err = fib6_rule_saddr(net, rule, flags, flp6,

				      ip6_dst_idev(&rt->dst)->dev);

				      idev->dev);



		if (err == -EAGAIN)

			goto again;