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| author | MichelleJin <shjy180909@gmail.com> | 2021-10-03 01:33:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-04 15:40:19 +0300 |
| commit | 23b08260481ca552180130bbef0f3a60df4c092e (patch) | |
| tree | 302f93cb80d0f8e9e6d7fd9355f32ca6bd66aeac /net/ipv6/seg6.c | |
| parent | e4addd4ed9b91e75fe0f58eecb0d24c60f357d1f (diff) | |
| download | linux-23b08260481ca552180130bbef0f3a60df4c092e.tar.xz | |
net: ipv6: fix use after free of struct seg6_pernet_data
sdata->tun_src should be freed before sdata is freed
because sdata->tun_src is allocated after sdata allocation.
So, kfree(sdata) and kfree(rcu_dereference_raw(sdata->tun_src)) are
changed code order.
Fixes: f04ed7d277e8 ("net: ipv6: check return value of rhashtable_init")
Signed-off-by: MichelleJin <shjy180909@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/seg6.c')
| -rw-r--r-- | net/ipv6/seg6.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c index 65744f2d38da..5daa1c3ed83b 100644 --- a/net/ipv6/seg6.c +++ b/net/ipv6/seg6.c @@ -375,8 +375,8 @@ static int __net_init seg6_net_init(struct net *net) #ifdef CONFIG_IPV6_SEG6_HMAC if (seg6_hmac_net_init(net)) { - kfree(sdata); kfree(rcu_dereference_raw(sdata->tun_src)); + kfree(sdata); return -ENOMEM; }; #endif |