diff options
| author | David S. Miller | 2012-04-02 02:40:20 +0200 |
|---|---|---|
| committer | David S. Miller | 2012-04-02 10:33:43 +0200 |
| commit | d317e4f68f5445e536dbd45381e7c900a33413db (patch) | |
| tree | 7212db7295276d22e98d175e6699672f866b9b3d /net/ipv4/netfilter | |
| parent | ipv4: Stop using NLA_PUT*(). (diff) | |
| download | kernel-qcow2-linux-d317e4f68f5445e536dbd45381e7c900a33413db.tar.gz kernel-qcow2-linux-d317e4f68f5445e536dbd45381e7c900a33413db.tar.xz kernel-qcow2-linux-d317e4f68f5445e536dbd45381e7c900a33413db.zip | |
netfilter: ipv4: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/netfilter')
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 5 | ||||
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 12 |
2 files changed, 9 insertions, 8 deletions
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index de9da21113a1..5c45e30cf788 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -303,8 +303,9 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len) static int ipv4_tuple_to_nlattr(struct sk_buff *skb, const struct nf_conntrack_tuple *tuple) { - NLA_PUT_BE32(skb, CTA_IP_V4_SRC, tuple->src.u3.ip); - NLA_PUT_BE32(skb, CTA_IP_V4_DST, tuple->dst.u3.ip); + if (nla_put_be32(skb, CTA_IP_V4_SRC, tuple->src.u3.ip) || + nla_put_be32(skb, CTA_IP_V4_DST, tuple->dst.u3.ip)) + goto nla_put_failure; return 0; nla_put_failure: diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c index 7cbe9cb261c2..0847e373d33c 100644 --- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c @@ -228,10 +228,10 @@ icmp_error(struct net *net, struct nf_conn *tmpl, static int icmp_tuple_to_nlattr(struct sk_buff *skb, const struct nf_conntrack_tuple *t) { - NLA_PUT_BE16(skb, CTA_PROTO_ICMP_ID, t->src.u.icmp.id); - NLA_PUT_U8(skb, CTA_PROTO_ICMP_TYPE, t->dst.u.icmp.type); - NLA_PUT_U8(skb, CTA_PROTO_ICMP_CODE, t->dst.u.icmp.code); - + if (nla_put_be16(skb, CTA_PROTO_ICMP_ID, t->src.u.icmp.id) || + nla_put_u8(skb, CTA_PROTO_ICMP_TYPE, t->dst.u.icmp.type) || + nla_put_u8(skb, CTA_PROTO_ICMP_CODE, t->dst.u.icmp.code)) + goto nla_put_failure; return 0; nla_put_failure: @@ -293,8 +293,8 @@ icmp_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data) { const unsigned int *timeout = data; - NLA_PUT_BE32(skb, CTA_TIMEOUT_ICMP_TIMEOUT, htonl(*timeout / HZ)); - + if (nla_put_be32(skb, CTA_TIMEOUT_ICMP_TIMEOUT, htonl(*timeout / HZ))) + goto nla_put_failure; return 0; nla_put_failure: |