shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-09 12:17:12 +09:00
Code Issues Packages Projects Releases Wiki Activity

netfilter: xt_qtaguid: fix crash on non-full sks

Browse Source 
If sock is request_sock then kernel will crash. So use
skb_to_full_sk() and sk_fullsock() helper to make sure
we get full sock.

Change-Id: Iefd548e0591055b1a8031f0835c4dca7b9d42b61
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
This commit is contained in:
Huang, Tao
2016-04-27 18:34:13 +08:00
parent 282266255a
commit 1b96a26c65
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
net/netfilter/xt_qtaguid.c
View File

@@ -1606,7 +1606,7 @@ static struct sock *qtaguid_find_sk(const struct sk_buff *skb,
* When in TCP_TIME_WAIT the sk is not a "struct sock" but
* "struct inet_timewait_sock" which is missing fields.
*/
if (sk->sk_state == TCP_TIME_WAIT) {
if (!sk_fullsock(sk)) {
sock_gen_put(sk);
sk = NULL;
}
@@ -1689,7 +1689,7 @@ static bool qtaguid_mt(const struct sk_buff *skb, struct xt_action_param *par)
/* default: Fall through and do UID releated work */
}
sk = skb->sk;
sk = skb_to_full_sk(skb);
/*
* When in TCP_TIME_WAIT the sk is not a "struct sock" but
* "struct inet_timewait_sock" which is missing fields.