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netfilter: ipset: Fix range bug in hash:ip,port,net 

Due to the missing ininitalization at adding/deleting entries, when
a plain_ip,port,net element was the object, multiple elements were
added/deleted instead. The bug came from the missing dangling
default initialization.

The error-prone default initialization is corrected in all hash:* types.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Jozsef Kadlecsik 2012-11-19 06:42:21 +00:00 committed by Pablo Neira Ayuso
parent f4a75d2eb7
commit 4fe198e6b1
4 changed files with 13 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/netfilter/ipset/ip_set_hash_ip.c
View File

@ -173,6 +173,7 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[],
return adtfn(set, &nip, timeout, flags);
}
ip_to = ip;
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
if (ret)
@ -185,8 +186,7 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[],
if (!cidr || cidr > 32)
return -IPSET_ERR_INVALID_CIDR;
ip_set_mask_from_to(ip, ip_to, cidr);
} else
ip_to = ip;
}
hosts = h->netmask == 32 ? 1 : 2 << (32 - h->netmask - 1);

7
net/netfilter/ipset/ip_set_hash_ipport.c
View File

@ -162,7 +162,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_ipport4_elem data = { };
u32 ip, ip_to = 0, p = 0, port, port_to;
u32 ip, ip_to, p = 0, port, port_to;
u32 timeout = h->timeout;
bool with_ports = false;
int ret;
@ -210,7 +210,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
return ip_set_eexist(ret, flags) ? 0 : ret;
}
ip = ntohl(data.ip);
ip_to = ip = ntohl(data.ip);
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
if (ret)
@ -223,8 +223,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
if (!cidr || cidr > 32)
return -IPSET_ERR_INVALID_CIDR;
ip_set_mask_from_to(ip, ip_to, cidr);
} else
ip_to = ip;
}
port_to = port = ntohs(data.port);
if (with_ports && tb[IPSET_ATTR_PORT_TO]) {

7
net/netfilter/ipset/ip_set_hash_ipportip.c
View File

@ -166,7 +166,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_ipportip4_elem data = { };
u32 ip, ip_to = 0, p = 0, port, port_to;
u32 ip, ip_to, p = 0, port, port_to;
u32 timeout = h->timeout;
bool with_ports = false;
int ret;
@ -218,7 +218,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
return ip_set_eexist(ret, flags) ? 0 : ret;
}
ip = ntohl(data.ip);
ip_to = ip = ntohl(data.ip);
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
if (ret)
@ -231,8 +231,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
if (!cidr || cidr > 32)
return -IPSET_ERR_INVALID_CIDR;
ip_set_mask_from_to(ip, ip_to, cidr);
} else
ip_to = ip;
}
port_to = port = ntohs(data.port);
if (with_ports && tb[IPSET_ATTR_PORT_TO]) {

7
net/netfilter/ipset/ip_set_hash_ipportnet.c
View File

@ -215,8 +215,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_ipportnet4_elem data = { .cidr = HOST_MASK - 1 };
u32 ip, ip_to = 0, p = 0, port, port_to;
u32 ip2_from = 0, ip2_to, ip2_last, ip2;
u32 ip, ip_to, p = 0, port, port_to;
u32 ip2_from, ip2_to, ip2_last, ip2;
u32 timeout = h->timeout;
bool with_ports = false;
u8 cidr;
@ -286,6 +286,7 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
return ip_set_eexist(ret, flags) ? 0 : ret;
}
ip_to = ip;
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
if (ret)
@ -306,6 +307,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
if (port > port_to)
swap(port, port_to);
}
ip2_to = ip2_from;
if (tb[IPSET_ATTR_IP2_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
if (ret)