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tcp: fix TIME_WAIT socket reference leak on PSP policy failure

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Release the TIME_WAIT socket reference and jump to discard_it
upon PSP policy failure in both IPv4 and IPv6 receive paths.
This prevents a memory leak of tcp_tw_bucket structures.

Fixes: 659a2899a5 ("tcp: add datapath logic for PSP with inline key exchange")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20260710181317.4060230-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Eric Dumazet
2026-07-10 18:13:17 +00:00
committed by Paolo Abeni
parent df6134b527
commit 2c1931a811
2 changed files with 8 additions and 4 deletions
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6
net/ipv4/tcp_ipv4.c
View File

@@ -2318,8 +2318,10 @@ int tcp_v4_rcv(struct sk_buff *skb)
}
drop_reason = psp_twsk_rx_policy_check(inet_twsk(sk), skb);
if (drop_reason)
break;
if (drop_reason) {
inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
}
/* to ACK */
fallthrough;

6
net/ipv6/tcp_ipv6.c
View File

@@ -1977,8 +1977,10 @@ INDIRECT_CALLABLE_SCOPE int tcp_v6_rcv(struct sk_buff *skb)
}
drop_reason = psp_twsk_rx_policy_check(inet_twsk(sk), skb);
if (drop_reason)
break;
if (drop_reason) {
inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
}
/* to ACK */
fallthrough;