From: Kuniyuki Iwashima Date: Mon, 30 Oct 2023 20:10:41 +0000 (-0700) Subject: dccp: Call security_inet_conn_request() after setting IPv4 addresses. X-Git-Tag: v6.6.17~3094 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0a2bcc3bb7d32f6e9ee8f31c7a3f43d1fe00c342;p=platform%2Fkernel%2Flinux-rpi.git dccp: Call security_inet_conn_request() after setting IPv4 addresses. [ Upstream commit fa2df45af13091f76b89adb84a28f13818d5d631 ] 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 Acked-by: Paul Moore Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 69453b9..524b7e5 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 *