diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-12-13 03:54:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 23:57:43 +0100 |
| commit | aebcf82c1fe9231be5cb4f9c1362d5db39e7d7b2 (patch) | |
| tree | f164bead26b172ee82d6eaa81a0148d980985bce /net/ipv6/icmp.c | |
| parent | [IPSEC]: Make callers of xfrm_lookup to use XFRM_LOOKUP_WAIT (diff) | |
| download | linux-aebcf82c1fe9231be5cb4f9c1362d5db39e7d7b2.tar.xz linux-aebcf82c1fe9231be5cb4f9c1362d5db39e7d7b2.zip | |
[IPSEC]: Do not let packets pass when ICMP flag is off
This fixes a logical error in ICMP policy checks which lets
packets through if the state ICMP flag is off.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/icmp.c')
| -rw-r--r-- | net/ipv6/icmp.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 1659d2fb01fe..c3bbd8687307 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -644,10 +644,13 @@ static int icmpv6_rcv(struct sk_buff *skb) struct icmp6hdr *hdr; int type; - if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb) && skb->sp && - skb->sp->xvec[skb->sp->len - 1]->props.flags & XFRM_STATE_ICMP) { + if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) { int nh; + if (!(skb->sp && skb->sp->xvec[skb->sp->len - 1]->props.flags & + XFRM_STATE_ICMP)) + goto drop_no_count; + if (!pskb_may_pull(skb, sizeof(*hdr) + sizeof(*orig_hdr))) goto drop_no_count; |