diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2005-10-18 06:03:28 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@mandriva.com> | 2005-10-20 20:49:59 +0400 |
| commit | 49c5bfaffe8ae6e6440dc4bf78b03800960d93f5 (patch) | |
| tree | dbd4565b42697a7fdeee8d088f017eb7df8bc594 | |
| parent | ffa29347dfbc158d1f47f5925324a6f5713659c1 (diff) | |
| download | linux-49c5bfaffe8ae6e6440dc4bf78b03800960d93f5.tar.xz | |
[DCCP]: Clear the IPCB area
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>
| -rw-r--r-- | net/dccp/ipv4.c | 2 | ||||
| -rw-r--r-- | net/dccp/output.c | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index ae088d1347af..6298cf58ff9e 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -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) diff --git a/net/dccp/output.c b/net/dccp/output.c index 7006549f7050..29250749f16f 100644 --- a/net/dccp/output.c +++ b/net/dccp/output.c @@ -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; |