diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2023-10-30 21:10:41 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-11-02 12:55:42 +0100 |
| commit | fa2df45af13091f76b89adb84a28f13818d5d631 (patch) | |
| tree | a9e382d7a49d843f00c0902e89990e860bd37a43 | |
| parent | net/smc: fix documentation of buffer sizes (diff) | |
| download | linux-fa2df45af13091f76b89adb84a28f13818d5d631.tar.xz linux-fa2df45af13091f76b89adb84a28f13818d5d631.zip | |
dccp: Call security_inet_conn_request() after setting IPv4 addresses.
Initially, commit 4237c75c0a35 ("[MLSXFRM]: Auto-labeling of child
sockets") introduced security_inet_conn_request() in some functions
where reqsk is allocated. The hook is added just after the allocation,
so reqsk's IPv4 remote address was not initialised then.
However, SELinux/Smack started to read it in netlbl_req_setattr()
after the cited commits.
This bug was partially fixed by commit 284904aa7946 ("lsm: Relocate
the IPv4 security_inet_conn_request() hooks").
This patch fixes the last bug in DCCPv4.
Fixes: 389fb800ac8b ("netlabel: Label incoming TCP connections correctly in SELinux")
Fixes: 07feee8f812f ("netlabel: Cleanup the Smack/NetLabel code to fix incoming TCP connections")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | net/dccp/ipv4.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 1b8cbfda6e5d..44b033fe1ef6 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -629,9 +629,6 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) if (dccp_parse_options(sk, dreq, skb)) goto drop_and_free; - if (security_inet_conn_request(sk, skb, req)) - goto drop_and_free; - ireq = inet_rsk(req); sk_rcv_saddr_set(req_to_sk(req), ip_hdr(skb)->daddr); sk_daddr_set(req_to_sk(req), ip_hdr(skb)->saddr); @@ -639,6 +636,9 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) ireq->ireq_family = AF_INET; ireq->ir_iif = READ_ONCE(sk->sk_bound_dev_if); + if (security_inet_conn_request(sk, skb, req)) + goto drop_and_free; + /* * Step 3: Process LISTEN state * |