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-rw-r--r--net/bridge/br.c3
-rw-r--r--net/bridge/br_device.c2
-rw-r--r--net/bridge/br_if.c26
-rw-r--r--net/bridge/br_netfilter_hooks.c5
-rw-r--r--net/bridge/br_private.h2
-rw-r--r--net/bridge/br_sysfs_br.c2
-rw-r--r--net/bridge/br_sysfs_if.c36
-rw-r--r--net/bridge/br_vlan.c2
-rw-r--r--net/bridge/netfilter/ebt_among.c55
-rw-r--r--net/bridge/netfilter/ebtable_broute.c1
-rw-r--r--net/bridge/netfilter/ebtable_filter.c1
-rw-r--r--net/bridge/netfilter/ebtable_nat.c1
-rw-r--r--net/bridge/netfilter/ebtables.c44
-rw-r--r--net/bridge/netfilter/nf_log_bridge.c1
14 files changed, 136 insertions, 45 deletions
diff --git a/net/bridge/br.c b/net/bridge/br.c
index 7770481a6506..26e1616b2c90 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -52,7 +52,7 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v
switch (event) {
case NETDEV_CHANGEMTU:
- dev_set_mtu(br->dev, br_min_mtu(br));
+ dev_set_mtu(br->dev, br_mtu(br));
break;
case NETDEV_CHANGEADDR:
@@ -188,7 +188,6 @@ static void __net_exit br_net_exit(struct net *net)
static struct pernet_operations br_net_ops = {
.exit = br_net_exit,
- .async = true,
};
static const struct stp_proto br_stp_proto = {
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 1285ca30ab0a..278fc999d355 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -224,7 +224,7 @@ static void br_get_stats64(struct net_device *dev,
static int br_change_mtu(struct net_device *dev, int new_mtu)
{
struct net_bridge *br = netdev_priv(dev);
- if (new_mtu > br_min_mtu(br))
+ if (new_mtu > br_mtu(br))
return -EINVAL;
dev->mtu = new_mtu;
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 9ba4ed65c52b..87b2afd455c7 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -424,8 +424,18 @@ int br_del_bridge(struct net *net, const char *name)
return ret;
}
+static bool min_mtu(int a, int b)
+{
+ return a < b ? 1 : 0;
+}
+
+static bool max_mtu(int a, int b)
+{
+ return a > b ? 1 : 0;
+}
+
/* MTU of the bridge pseudo-device: ETH_DATA_LEN or the minimum of the ports */
-int br_min_mtu(const struct net_bridge *br)
+static int __br_mtu(const struct net_bridge *br, bool (compare_fn)(int, int))
{
const struct net_bridge_port *p;
int mtu = 0;
@@ -436,13 +446,21 @@ int br_min_mtu(const struct net_bridge *br)
mtu = ETH_DATA_LEN;
else {
list_for_each_entry(p, &br->port_list, list) {
- if (!mtu || p->dev->mtu < mtu)
+ if (!mtu || compare_fn(p->dev->mtu, mtu))
mtu = p->dev->mtu;
}
}
return mtu;
}
+int br_mtu(const struct net_bridge *br)
+{
+ if (br_vlan_enabled(br->dev))
+ return __br_mtu(br, max_mtu);
+ else
+ return __br_mtu(br, min_mtu);
+}
+
static void br_set_gso_limits(struct net_bridge *br)
{
unsigned int gso_max_size = GSO_MAX_SIZE;
@@ -594,7 +612,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev,
if (changed_addr)
call_netdevice_notifiers(NETDEV_CHANGEADDR, br->dev);
- dev_set_mtu(br->dev, br_min_mtu(br));
+ dev_set_mtu(br->dev, br_mtu(br));
br_set_gso_limits(br);
kobject_uevent(&p->kobj, KOBJ_ADD);
@@ -641,7 +659,7 @@ int br_del_if(struct net_bridge *br, struct net_device *dev)
*/
del_nbp(p);
- dev_set_mtu(br->dev, br_min_mtu(br));
+ dev_set_mtu(br->dev, br_mtu(br));
br_set_gso_limits(br);
spin_lock_bh(&br->lock);
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index 484f54150525..9b16eaf33819 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -214,7 +214,7 @@ static int br_validate_ipv4(struct net *net, struct sk_buff *skb)
iph = ip_hdr(skb);
if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
- goto inhdr_error;
+ goto csum_error;
len = ntohs(iph->tot_len);
if (skb->len < len) {
@@ -236,6 +236,8 @@ static int br_validate_ipv4(struct net *net, struct sk_buff *skb)
*/
return 0;
+csum_error:
+ __IP_INC_STATS(net, IPSTATS_MIB_CSUMERRORS);
inhdr_error:
__IP_INC_STATS(net, IPSTATS_MIB_INHDRERRORS);
drop:
@@ -967,7 +969,6 @@ static struct pernet_operations brnf_net_ops __read_mostly = {
.exit = brnf_exit_net,
.id = &brnf_net_id,
.size = sizeof(struct brnf_net),
- .async = true,
};
static struct notifier_block brnf_notifier __read_mostly = {
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 8e13a64d8c99..048d5b51813b 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -578,7 +578,7 @@ int br_del_bridge(struct net *net, const char *name);
int br_add_if(struct net_bridge *br, struct net_device *dev,
struct netlink_ext_ack *extack);
int br_del_if(struct net_bridge *br, struct net_device *dev);
-int br_min_mtu(const struct net_bridge *br);
+int br_mtu(const struct net_bridge *br);
netdev_features_t br_features_recompute(struct net_bridge *br,
netdev_features_t features);
void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index b1be0dcfba6b..0318a69888d4 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -893,7 +893,7 @@ static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
static struct bin_attribute bridge_forward = {
.attr = { .name = SYSFS_BRIDGE_FDB,
- .mode = S_IRUGO, },
+ .mode = 0444, },
.read = brforward_read,
};
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index 126a8ea73c96..fd31ad83ec7b 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -44,7 +44,7 @@ static int store_##_name(struct net_bridge_port *p, unsigned long v) \
{ \
return store_flag(p, v, _mask); \
} \
-static BRPORT_ATTR(_name, S_IRUGO | S_IWUSR, \
+static BRPORT_ATTR(_name, 0644, \
show_##_name, store_##_name)
static int store_flag(struct net_bridge_port *p, unsigned long v,
@@ -71,7 +71,7 @@ static ssize_t show_path_cost(struct net_bridge_port *p, char *buf)
return sprintf(buf, "%d\n", p->path_cost);
}
-static BRPORT_ATTR(path_cost, S_IRUGO | S_IWUSR,
+static BRPORT_ATTR(path_cost, 0644,
show_path_cost, br_stp_set_path_cost);
static ssize_t show_priority(struct net_bridge_port *p, char *buf)
@@ -79,91 +79,91 @@ static ssize_t show_priority(struct net_bridge_port *p, char *buf)
return sprintf(buf, "%d\n", p->priority);
}
-static BRPORT_ATTR(priority, S_IRUGO | S_IWUSR,
+static BRPORT_ATTR(priority, 0644,
show_priority, br_stp_set_port_priority);
static ssize_t show_designated_root(struct net_bridge_port *p, char *buf)
{
return br_show_bridge_id(buf, &p->designated_root);
}
-static BRPORT_ATTR(designated_root, S_IRUGO, show_designated_root, NULL);
+static BRPORT_ATTR(designated_root, 0444, show_designated_root, NULL);
static ssize_t show_designated_bridge(struct net_bridge_port *p, char *buf)
{
return br_show_bridge_id(buf, &p->designated_bridge);
}
-static BRPORT_ATTR(designated_bridge, S_IRUGO, show_designated_bridge, NULL);
+static BRPORT_ATTR(designated_bridge, 0444, show_designated_bridge, NULL);
static ssize_t show_designated_port(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "%d\n", p->designated_port);
}
-static BRPORT_ATTR(designated_port, S_IRUGO, show_designated_port, NULL);
+static BRPORT_ATTR(designated_port, 0444, show_designated_port, NULL);
static ssize_t show_designated_cost(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "%d\n", p->designated_cost);
}
-static BRPORT_ATTR(designated_cost, S_IRUGO, show_designated_cost, NULL);
+static BRPORT_ATTR(designated_cost, 0444, show_designated_cost, NULL);
static ssize_t show_port_id(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "0x%x\n", p->port_id);
}
-static BRPORT_ATTR(port_id, S_IRUGO, show_port_id, NULL);
+static BRPORT_ATTR(port_id, 0444, show_port_id, NULL);
static ssize_t show_port_no(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "0x%x\n", p->port_no);
}
-static BRPORT_ATTR(port_no, S_IRUGO, show_port_no, NULL);
+static BRPORT_ATTR(port_no, 0444, show_port_no, NULL);
static ssize_t show_change_ack(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "%d\n", p->topology_change_ack);
}
-static BRPORT_ATTR(change_ack, S_IRUGO, show_change_ack, NULL);
+static BRPORT_ATTR(change_ack, 0444, show_change_ack, NULL);
static ssize_t show_config_pending(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "%d\n", p->config_pending);
}
-static BRPORT_ATTR(config_pending, S_IRUGO, show_config_pending, NULL);
+static BRPORT_ATTR(config_pending, 0444, show_config_pending, NULL);
static ssize_t show_port_state(struct net_bridge_port *p, char *buf)
{
return sprintf(buf, "%d\n", p->state);
}
-static BRPORT_ATTR(state, S_IRUGO, show_port_state, NULL);
+static BRPORT_ATTR(state, 0444, show_port_state, NULL);
static ssize_t show_message_age_timer(struct net_bridge_port *p,
char *buf)
{
return sprintf(buf, "%ld\n", br_timer_value(&p->message_age_timer));
}
-static BRPORT_ATTR(message_age_timer, S_IRUGO, show_message_age_timer, NULL);
+static BRPORT_ATTR(message_age_timer, 0444, show_message_age_timer, NULL);
static ssize_t show_forward_delay_timer(struct net_bridge_port *p,
char *buf)
{
return sprintf(buf, "%ld\n", br_timer_value(&p->forward_delay_timer));
}
-static BRPORT_ATTR(forward_delay_timer, S_IRUGO, show_forward_delay_timer, NULL);
+static BRPORT_ATTR(forward_delay_timer, 0444, show_forward_delay_timer, NULL);
static ssize_t show_hold_timer(struct net_bridge_port *p,
char *buf)
{
return sprintf(buf, "%ld\n", br_timer_value(&p->hold_timer));
}
-static BRPORT_ATTR(hold_timer, S_IRUGO, show_hold_timer, NULL);
+static BRPORT_ATTR(hold_timer, 0444, show_hold_timer, NULL);
static int store_flush(struct net_bridge_port *p, unsigned long v)
{
br_fdb_delete_by_port(p->br, p, 0, 0); // Don't delete local entry
return 0;
}
-static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush);
+static BRPORT_ATTR(flush, 0200, NULL, store_flush);
static ssize_t show_group_fwd_mask(struct net_bridge_port *p, char *buf)
{
@@ -179,7 +179,7 @@ static int store_group_fwd_mask(struct net_bridge_port *p,
return 0;
}
-static BRPORT_ATTR(group_fwd_mask, S_IRUGO | S_IWUSR, show_group_fwd_mask,
+static BRPORT_ATTR(group_fwd_mask, 0644, show_group_fwd_mask,
store_group_fwd_mask);
BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPIN_MODE);
@@ -204,7 +204,7 @@ static int store_multicast_router(struct net_bridge_port *p,
{
return br_multicast_set_port_router(p, v);
}
-static BRPORT_ATTR(multicast_router, S_IRUGO | S_IWUSR, show_multicast_router,
+static BRPORT_ATTR(multicast_router, 0644, show_multicast_router,
store_multicast_router);
BRPORT_ATTR_FLAG(multicast_fast_leave, BR_MULTICAST_FAST_LEAVE);
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 51935270c651..9896f4975353 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -168,6 +168,8 @@ static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid
masterv = br_vlan_find(vg, vid);
if (WARN_ON(!masterv))
return NULL;
+ refcount_set(&masterv->refcnt, 1);
+ return masterv;
}
refcount_inc(&masterv->refcnt);
diff --git a/net/bridge/netfilter/ebt_among.c b/net/bridge/netfilter/ebt_among.c
index ce7152a12bd8..620e54f08296 100644
--- a/net/bridge/netfilter/ebt_among.c
+++ b/net/bridge/netfilter/ebt_among.c
@@ -172,18 +172,69 @@ ebt_among_mt(const struct sk_buff *skb, struct xt_action_param *par)
return true;
}
+static bool poolsize_invalid(const struct ebt_mac_wormhash *w)
+{
+ return w && w->poolsize >= (INT_MAX / sizeof(struct ebt_mac_wormhash_tuple));
+}
+
+static bool wormhash_offset_invalid(int off, unsigned int len)
+{
+ if (off == 0) /* not present */
+ return false;
+
+ if (off < (int)sizeof(struct ebt_among_info) ||
+ off % __alignof__(struct ebt_mac_wormhash))
+ return true;
+
+ off += sizeof(struct ebt_mac_wormhash);
+
+ return off > len;
+}
+
+static bool wormhash_sizes_valid(const struct ebt_mac_wormhash *wh, int a, int b)
+{
+ if (a == 0)
+ a = sizeof(struct ebt_among_info);
+
+ return ebt_mac_wormhash_size(wh) + a == b;
+}
+
static int ebt_among_mt_check(const struct xt_mtchk_param *par)
{
const struct ebt_among_info *info = par->matchinfo;
const struct ebt_entry_match *em =
container_of(par->matchinfo, const struct ebt_entry_match, data);
- int expected_length = sizeof(struct ebt_among_info);
+ unsigned int expected_length = sizeof(struct ebt_among_info);
const struct ebt_mac_wormhash *wh_dst, *wh_src;
int err;
+ if (expected_length > em->match_size)
+ return -EINVAL;
+
+ if (wormhash_offset_invalid(info->wh_dst_ofs, em->match_size) ||
+ wormhash_offset_invalid(info->wh_src_ofs, em->match_size))
+ return -EINVAL;
+
wh_dst = ebt_among_wh_dst(info);
- wh_src = ebt_among_wh_src(info);
+ if (poolsize_invalid(wh_dst))
+ return -EINVAL;
+
expected_length += ebt_mac_wormhash_size(wh_dst);
+ if (expected_length > em->match_size)
+ return -EINVAL;
+
+ wh_src = ebt_among_wh_src(info);
+ if (poolsize_invalid(wh_src))
+ return -EINVAL;
+
+ if (info->wh_src_ofs < info->wh_dst_ofs) {
+ if (!wormhash_sizes_valid(wh_src, info->wh_src_ofs, info->wh_dst_ofs))
+ return -EINVAL;
+ } else {
+ if (!wormhash_sizes_valid(wh_dst, info->wh_dst_ofs, info->wh_src_ofs))
+ return -EINVAL;
+ }
+
expected_length += ebt_mac_wormhash_size(wh_src);
if (em->match_size != EBT_ALIGN(expected_length)) {
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index f070b5e5b9dd..276b60262981 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/net/bridge/netfilter/ebtable_broute.c
@@ -77,7 +77,6 @@ static void __net_exit broute_net_exit(struct net *net)
static struct pernet_operations broute_net_ops = {
.init = broute_net_init,
.exit = broute_net_exit,
- .async = true,
};
static int __init ebtable_broute_init(void)
diff --git a/net/bridge/netfilter/ebtable_filter.c b/net/bridge/netfilter/ebtable_filter.c
index 4151afc8efcc..c41da5fac84f 100644
--- a/net/bridge/netfilter/ebtable_filter.c
+++ b/net/bridge/netfilter/ebtable_filter.c
@@ -105,7 +105,6 @@ static void __net_exit frame_filter_net_exit(struct net *net)
static struct pernet_operations frame_filter_net_ops = {
.init = frame_filter_net_init,
.exit = frame_filter_net_exit,
- .async = true,
};
static int __init ebtable_filter_init(void)
diff --git a/net/bridge/netfilter/ebtable_nat.c b/net/bridge/netfilter/ebtable_nat.c
index b8da2dfe2ec5..08df7406ecb3 100644
--- a/net/bridge/netfilter/ebtable_nat.c
+++ b/net/bridge/netfilter/ebtable_nat.c
@@ -105,7 +105,6 @@ static void __net_exit frame_nat_net_exit(struct net *net)
static struct pernet_operations frame_nat_net_ops = {
.init = frame_nat_net_init,
.exit = frame_nat_net_exit,
- .async = true,
};
static int __init ebtable_nat_init(void)
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index a8cb543e3296..032e0fe45940 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1643,7 +1643,8 @@ static int compat_match_to_user(struct ebt_entry_match *m, void __user **dstptr,
int off = ebt_compat_match_offset(match, m->match_size);
compat_uint_t msize = m->match_size - off;
- BUG_ON(off >= m->match_size);
+ if (WARN_ON(off >= m->match_size))
+ return -EINVAL;
if (copy_to_user(cm->u.name, match->name, strlen(match->name) + 1) ||
put_user(match->revision, &cm->u.revision) ||
@@ -1674,7 +1675,8 @@ static int compat_target_to_user(struct ebt_entry_target *t,
int off = xt_compat_target_offset(target);
compat_uint_t tsize = t->target_size - off;
- BUG_ON(off >= t->target_size);
+ if (WARN_ON(off >= t->target_size))
+ return -EINVAL;
if (copy_to_user(cm->u.name, target->name, strlen(target->name) + 1) ||
put_user(target->revision, &cm->u.revision) ||
@@ -1910,7 +1912,8 @@ static int ebt_buf_add(struct ebt_entries_buf_state *state,
if (state->buf_kern_start == NULL)
goto count_only;
- BUG_ON(state->buf_kern_offset + sz > state->buf_kern_len);
+ if (WARN_ON(state->buf_kern_offset + sz > state->buf_kern_len))
+ return -EINVAL;
memcpy(state->buf_kern_start + state->buf_kern_offset, data, sz);
@@ -1923,7 +1926,8 @@ static int ebt_buf_add_pad(struct ebt_entries_buf_state *state, unsigned int sz)
{
char *b = state->buf_kern_start;
- BUG_ON(b && state->buf_kern_offset > state->buf_kern_len);
+ if (WARN_ON(b && state->buf_kern_offset > state->buf_kern_len))
+ return -EINVAL;
if (b != NULL && sz > 0)
memset(b + state->buf_kern_offset, 0, sz);
@@ -2002,8 +2006,10 @@ static int compat_mtw_from_user(struct compat_ebt_entry_mwt *mwt,
pad = XT_ALIGN(size_kern) - size_kern;
if (pad > 0 && dst) {
- BUG_ON(state->buf_kern_len <= pad);
- BUG_ON(state->buf_kern_offset - (match_size + off) + size_kern > state->buf_kern_len - pad);
+ if (WARN_ON(state->buf_kern_len <= pad))
+ return -EINVAL;
+ if (WARN_ON(state->buf_kern_offset - (match_size + off) + size_kern > state->buf_kern_len - pad))
+ return -EINVAL;
memset(dst + size_kern, 0, pad);
}
return off + match_size;
@@ -2053,7 +2059,8 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
if (ret < 0)
return ret;
- BUG_ON(ret < match32->match_size);
+ if (WARN_ON(ret < match32->match_size))
+ return -EINVAL;
growth += ret - match32->match_size;
growth += ebt_compat_entry_padsize();
@@ -2063,7 +2070,9 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
if (match_kern)
match_kern->match_size = ret;
- WARN_ON(type == EBT_COMPAT_TARGET && size_left);
+ if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
+ return -EINVAL;
+
match32 = (struct compat_ebt_entry_mwt *) buf;
}
@@ -2119,6 +2128,19 @@ static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base,
*
* offsets are relative to beginning of struct ebt_entry (i.e., 0).
*/
+ for (i = 0; i < 4 ; ++i) {
+ if (offsets[i] > *total)
+ return -EINVAL;
+
+ if (i < 3 && offsets[i] == *total)
+ return -EINVAL;
+
+ if (i == 0)
+ continue;
+ if (offsets[i-1] > offsets[i])
+ return -EINVAL;
+ }
+
for (i = 0, j = 1 ; j < 4 ; j++, i++) {
struct compat_ebt_entry_mwt *match32;
unsigned int size;
@@ -2150,7 +2172,8 @@ static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base,
startoff = state->buf_user_offset - startoff;
- BUG_ON(*total < startoff);
+ if (WARN_ON(*total < startoff))
+ return -EINVAL;
*total -= startoff;
return 0;
}
@@ -2279,7 +2302,8 @@ static int compat_do_replace(struct net *net, void __user *user,
state.buf_kern_len = size64;
ret = compat_copy_entries(entries_tmp, tmp.entries_size, &state);
- BUG_ON(ret < 0); /* parses same data again */
+ if (WARN_ON(ret < 0))
+ goto out_unlock;
vfree(entries_tmp);
tmp.entries_size = size64;
diff --git a/net/bridge/netfilter/nf_log_bridge.c b/net/bridge/netfilter/nf_log_bridge.c
index 91bfc2ac055a..bd2b3c78f59b 100644
--- a/net/bridge/netfilter/nf_log_bridge.c
+++ b/net/bridge/netfilter/nf_log_bridge.c
@@ -48,7 +48,6 @@ static void __net_exit nf_log_bridge_net_exit(struct net *net)
static struct pernet_operations nf_log_bridge_net_ops = {
.init = nf_log_bridge_net_init,
.exit = nf_log_bridge_net_exit,
- .async = true,
};
static int __init nf_log_bridge_init(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-27 01:24:52 +0000