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[DCCP]: Clear the IPCB area

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Turns out the problem has nothing to do with use-after-free or double-free.
It's just that we're not clearing the CB area and DCCP unlike TCP uses a CB
format that's incompatible with IP.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ian McDonald <imcdnzl@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Herbert Xu 2005-10-18 12:03:28 +10:00 committed by Arnaldo Carvalho de Melo
parent ffa29347df
commit 49c5bfaffe
2 changed files with 3 additions and 0 deletions
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2
net/dccp/ipv4.c
View file

@ -463,6 +463,7 @@ static int dccp_v4_send_response(struct sock *sk, struct request_sock *req,
if (skb != NULL) {
const struct inet_request_sock *ireq = inet_rsk(req);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
err = ip_build_and_send_pkt(skb, sk, ireq->loc_addr,
ireq->rmt_addr,
ireq->opt);
@ -647,6 +648,7 @@ int dccp_v4_send_reset(struct sock *sk, enum dccp_reset_codes code)
if (skb != NULL) {
const struct inet_sock *inet = inet_sk(sk);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
err = ip_build_and_send_pkt(skb, sk,
inet->saddr, inet->daddr, NULL);
if (err == NET_XMIT_CN)

1
net/dccp/output.c
View file

@ -100,6 +100,7 @@ int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
err = ip_queue_xmit(skb, 0);
if (err <= 0)
return err;