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espintcp: fix skb leaks

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A few error paths are missing a kfree_skb.

Fixes: e27cca96cd ("xfrm: add espintcp (RFC 8229)")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Sabrina Dubroca 2025-04-09 15:59:56 +02:00 • committed by Steffen Klassert
parent cfe82469a0
commit 63c1f19a3b
3 changed files with 9 additions and 3 deletions
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4
net/ipv4/esp4.c
View file

@ -199,8 +199,10 @@ static int esp_output_tcp_finish(struct xfrm_state *x, struct sk_buff *skb)
sk = esp_find_tcp_sk(x);
err = PTR_ERR_OR_ZERO(sk);
if (err)
if (err) {
kfree_skb(skb);
goto out;
}
bh_lock_sock(sk);
if (sock_owned_by_user(sk))

4
net/ipv6/esp6.c
View file

@ -216,8 +216,10 @@ static int esp_output_tcp_finish(struct xfrm_state *x, struct sk_buff *skb)
sk = esp6_find_tcp_sk(x);
err = PTR_ERR_OR_ZERO(sk);
if (err)
if (err) {
kfree_skb(skb);
goto out;
}
bh_lock_sock(sk);
if (sock_owned_by_user(sk))

4
net/xfrm/espintcp.c
View file

@ -171,8 +171,10 @@ int espintcp_queue_out(struct sock *sk, struct sk_buff *skb)
struct espintcp_ctx *ctx = espintcp_getctx(sk);
if (skb_queue_len(&ctx->out_queue) >=
READ_ONCE(net_hotdata.max_backlog))
READ_ONCE(net_hotdata.max_backlog)) {
kfree_skb(skb);
return -ENOBUFS;
}
__skb_queue_tail(&ctx->out_queue, skb);