From 9003d12b0a6ae9b19e5f60296c2dec37ff84f73b Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 24 Mar 2007 21:18:36 +0100 Subject: NETFILTER: ctnetlink: check for status attribute existence on conntrack creation Check that status flags are available in the netlink message received to create a new conntrack. Fixes a crash in ctnetlink_create_conntrack when the CTA_STATUS attribute is not present. Signed-off-by: Pablo Neira Ayuso Signed-off-by: Patrick McHardy Signed-off-by: Adrian Bunk --- net/ipv4/netfilter/ip_conntrack_netlink.c | 8 +++++--- net/netfilter/nf_conntrack_netlink.c | 8 +++++--- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/net/ipv4/netfilter/ip_conntrack_netlink.c b/net/ipv4/netfilter/ip_conntrack_netlink.c index d4e6d0a3bf20..f558a014d68b 100644 --- a/net/ipv4/netfilter/ip_conntrack_netlink.c +++ b/net/ipv4/netfilter/ip_conntrack_netlink.c @@ -1021,9 +1021,11 @@ ctnetlink_create_conntrack(struct nfattr *cda[], ct->timeout.expires = jiffies + ct->timeout.expires * HZ; ct->status |= IPS_CONFIRMED; - err = ctnetlink_change_status(ct, cda); - if (err < 0) - goto err; + if (cda[CTA_STATUS-1]) { + err = ctnetlink_change_status(ct, cda); + if (err < 0) + goto err; + } if (cda[CTA_PROTOINFO-1]) { err = ctnetlink_change_protoinfo(ct, cda); diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 40edeefb2814..eca3a1abddba 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -1035,9 +1035,11 @@ ctnetlink_create_conntrack(struct nfattr *cda[], ct->timeout.expires = jiffies + ct->timeout.expires * HZ; ct->status |= IPS_CONFIRMED; - err = ctnetlink_change_status(ct, cda); - if (err < 0) - goto err; + if (cda[CTA_STATUS-1]) { + err = ctnetlink_change_status(ct, cda); + if (err < 0) + goto err; + } if (cda[CTA_PROTOINFO-1]) { err = ctnetlink_change_protoinfo(ct, cda); -- cgit v1.2.3