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authorYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>2006-02-04 02:12:14 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-02-04 23:51:17 -0800
commitddc8d029ac6813827849801bce2d8c8813070db6 (patch)
treef0ae3607018873a8ed3594b9d81f155aed75b906 /net
parent34f9a2e4deb760ddcb94cd0cd4f9ce18070d53d9 (diff)
downloadlinux-ddc8d029ac6813827849801bce2d8c8813070db6.tar.bz2
[NETFILTER]: nf_conntrack: check address family when finding protocol module
__nf_conntrack_{l3}proto_find() doesn't check the passed protocol family, then it's possible to touch out of the array which has only AF_MAX items. Spotted by Pablo Neira Ayuso. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nf_conntrack_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 62bb509f05d4..0ce337a1d974 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -188,7 +188,7 @@ extern struct nf_conntrack_protocol nf_conntrack_generic_protocol;
struct nf_conntrack_protocol *
__nf_ct_proto_find(u_int16_t l3proto, u_int8_t protocol)
{
- if (unlikely(nf_ct_protos[l3proto] == NULL))
+ if (unlikely(l3proto >= AF_MAX || nf_ct_protos[l3proto] == NULL))
return &nf_conntrack_generic_protocol;
return nf_ct_protos[l3proto][protocol];