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Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_multicast.c2
-rw-r--r--net/ipv4/udp.c4
-rw-r--r--net/ipv6/udp.c4
-rw-r--r--net/mac80211/main.c4
-rw-r--r--net/mac80211/mesh.c3
-rw-r--r--net/mac80211/rx.c5
-rw-r--r--net/mac80211/sta_info.c20
-rw-r--r--net/x25/af_x25.c67
-rw-r--r--net/x25/x25_facilities.c27
-rw-r--r--net/x25/x25_in.c15
10 files changed, 124 insertions, 27 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 6980625537c..f29ada827a6 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -723,7 +723,7 @@ static int br_multicast_igmp3_report(struct net_bridge *br,
if (!pskb_may_pull(skb, len))
return -EINVAL;
- grec = (void *)(skb->data + len);
+ grec = (void *)(skb->data + len - sizeof(*grec));
group = grec->grec_mca;
type = grec->grec_type;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 954bbfb39df..8fef859db35 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -472,8 +472,8 @@ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr,
if (hslot->count < hslot2->count)
goto begin;
- result = udp4_lib_lookup2(net, INADDR_ANY, sport,
- daddr, hnum, dif,
+ result = udp4_lib_lookup2(net, saddr, sport,
+ INADDR_ANY, hnum, dif,
hslot2, slot2);
}
rcu_read_unlock();
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index c177aea88c0..90824852f59 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -259,8 +259,8 @@ static struct sock *__udp6_lib_lookup(struct net *net,
if (hslot->count < hslot2->count)
goto begin;
- result = udp6_lib_lookup2(net, &in6addr_any, sport,
- daddr, hnum, dif,
+ result = udp6_lib_lookup2(net, saddr, sport,
+ &in6addr_any, hnum, dif,
hslot2, slot2);
}
rcu_read_unlock();
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 06c33b68d8e..b887e484ae0 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -225,11 +225,11 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
switch (sdata->vif.type) {
case NL80211_IFTYPE_AP:
sdata->vif.bss_conf.enable_beacon =
- !!rcu_dereference(sdata->u.ap.beacon);
+ !!sdata->u.ap.beacon;
break;
case NL80211_IFTYPE_ADHOC:
sdata->vif.bss_conf.enable_beacon =
- !!rcu_dereference(sdata->u.ibss.presp);
+ !!sdata->u.ibss.presp;
break;
case NL80211_IFTYPE_MESH_POINT:
sdata->vif.bss_conf.enable_beacon = true;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 58e3e3a61d9..859ee5f3d94 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -750,9 +750,6 @@ ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
switch (fc & IEEE80211_FCTL_STYPE) {
case IEEE80211_STYPE_ACTION:
- if (skb->len < IEEE80211_MIN_ACTION_SIZE)
- return RX_DROP_MONITOR;
- /* fall through */
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_BEACON:
skb_queue_tail(&ifmsh->skb_queue, skb);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index f0accf622cd..04ea07f0e78 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1974,6 +1974,11 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
goto handled;
}
break;
+ case MESH_PLINK_CATEGORY:
+ case MESH_PATH_SEL_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ return ieee80211_mesh_rx_mgmt(sdata, rx->skb);
+ break;
}
/*
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 56422d89435..fb12cec4d33 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -93,12 +93,18 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
- sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
+ sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)],
+ rcu_read_lock_held() ||
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
while (sta) {
if (sta->sdata == sdata &&
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
break;
- sta = rcu_dereference(sta->hnext);
+ sta = rcu_dereference_check(sta->hnext,
+ rcu_read_lock_held() ||
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
}
return sta;
}
@@ -113,13 +119,19 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
- sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
+ sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)],
+ rcu_read_lock_held() ||
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
while (sta) {
if ((sta->sdata == sdata ||
sta->sdata->bss == sdata->bss) &&
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
break;
- sta = rcu_dereference(sta->hnext);
+ sta = rcu_dereference_check(sta->hnext,
+ rcu_read_lock_held() ||
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
}
return sta;
}
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index e56f711bacc..cbddd0cb83f 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -83,6 +83,41 @@ struct compat_x25_subscrip_struct {
};
#endif
+
+int x25_parse_address_block(struct sk_buff *skb,
+ struct x25_address *called_addr,
+ struct x25_address *calling_addr)
+{
+ unsigned char len;
+ int needed;
+ int rc;
+
+ if (skb->len < 1) {
+ /* packet has no address block */
+ rc = 0;
+ goto empty;
+ }
+
+ len = *skb->data;
+ needed = 1 + (len >> 4) + (len & 0x0f);
+
+ if (skb->len < needed) {
+ /* packet is too short to hold the addresses it claims
+ to hold */
+ rc = -1;
+ goto empty;
+ }
+
+ return x25_addr_ntoa(skb->data, called_addr, calling_addr);
+
+empty:
+ *called_addr->x25_addr = 0;
+ *calling_addr->x25_addr = 0;
+
+ return rc;
+}
+
+
int x25_addr_ntoa(unsigned char *p, struct x25_address *called_addr,
struct x25_address *calling_addr)
{
@@ -554,7 +589,8 @@ static int x25_create(struct net *net, struct socket *sock, int protocol,
x25->facilities.winsize_out = X25_DEFAULT_WINDOW_SIZE;
x25->facilities.pacsize_in = X25_DEFAULT_PACKET_SIZE;
x25->facilities.pacsize_out = X25_DEFAULT_PACKET_SIZE;
- x25->facilities.throughput = X25_DEFAULT_THROUGHPUT;
+ x25->facilities.throughput = 0; /* by default don't negotiate
+ throughput */
x25->facilities.reverse = X25_DEFAULT_REVERSE;
x25->dte_facilities.calling_len = 0;
x25->dte_facilities.called_len = 0;
@@ -922,16 +958,26 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
/*
* Extract the X.25 addresses and convert them to ASCII strings,
* and remove them.
+ *
+ * Address block is mandatory in call request packets
*/
- addr_len = x25_addr_ntoa(skb->data, &source_addr, &dest_addr);
+ addr_len = x25_parse_address_block(skb, &source_addr, &dest_addr);
+ if (addr_len <= 0)
+ goto out_clear_request;
skb_pull(skb, addr_len);
/*
* Get the length of the facilities, skip past them for the moment
* get the call user data because this is needed to determine
* the correct listener
+ *
+ * Facilities length is mandatory in call request packets
*/
+ if (skb->len < 1)
+ goto out_clear_request;
len = skb->data[0] + 1;
+ if (skb->len < len)
+ goto out_clear_request;
skb_pull(skb,len);
/*
@@ -1415,9 +1461,20 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
if (facilities.winsize_in < 1 ||
facilities.winsize_in > 127)
break;
- if (facilities.throughput < 0x03 ||
- facilities.throughput > 0xDD)
- break;
+ if (facilities.throughput) {
+ int out = facilities.throughput & 0xf0;
+ int in = facilities.throughput & 0x0f;
+ if (!out)
+ facilities.throughput |=
+ X25_DEFAULT_THROUGHPUT << 4;
+ else if (out < 0x30 || out > 0xD0)
+ break;
+ if (!in)
+ facilities.throughput |=
+ X25_DEFAULT_THROUGHPUT;
+ else if (in < 0x03 || in > 0x0D)
+ break;
+ }
if (facilities.reverse &&
(facilities.reverse & 0x81) != 0x81)
break;
diff --git a/net/x25/x25_facilities.c b/net/x25/x25_facilities.c
index a21f6646eb3..771bab00754 100644
--- a/net/x25/x25_facilities.c
+++ b/net/x25/x25_facilities.c
@@ -35,7 +35,7 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
struct x25_dte_facilities *dte_facs, unsigned long *vc_fac_mask)
{
unsigned char *p = skb->data;
- unsigned int len = *p++;
+ unsigned int len;
*vc_fac_mask = 0;
@@ -50,6 +50,14 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
memset(dte_facs->called_ae, '\0', sizeof(dte_facs->called_ae));
memset(dte_facs->calling_ae, '\0', sizeof(dte_facs->calling_ae));
+ if (skb->len < 1)
+ return 0;
+
+ len = *p++;
+
+ if (len >= skb->len)
+ return -1;
+
while (len > 0) {
switch (*p & X25_FAC_CLASS_MASK) {
case X25_FAC_CLASS_A:
@@ -247,6 +255,8 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk,
memcpy(new, ours, sizeof(*new));
len = x25_parse_facilities(skb, &theirs, dte, &x25->vc_facil_mask);
+ if (len < 0)
+ return len;
/*
* They want reverse charging, we won't accept it.
@@ -259,9 +269,18 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk,
new->reverse = theirs.reverse;
if (theirs.throughput) {
- if (theirs.throughput < ours->throughput) {
- SOCK_DEBUG(sk, "X.25: throughput negotiated down\n");
- new->throughput = theirs.throughput;
+ int theirs_in = theirs.throughput & 0x0f;
+ int theirs_out = theirs.throughput & 0xf0;
+ int ours_in = ours->throughput & 0x0f;
+ int ours_out = ours->throughput & 0xf0;
+ if (!ours_in || theirs_in < ours_in) {
+ SOCK_DEBUG(sk, "X.25: inbound throughput negotiated\n");
+ new->throughput = (new->throughput & 0xf0) | theirs_in;
+ }
+ if (!ours_out || theirs_out < ours_out) {
+ SOCK_DEBUG(sk,
+ "X.25: outbound throughput negotiated\n");
+ new->throughput = (new->throughput & 0x0f) | theirs_out;
}
}
diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c
index a31b3b9e596..372ac226e64 100644
--- a/net/x25/x25_in.c
+++ b/net/x25/x25_in.c
@@ -90,6 +90,7 @@ static int x25_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametype)
{
struct x25_address source_addr, dest_addr;
+ int len;
switch (frametype) {
case X25_CALL_ACCEPTED: {
@@ -107,11 +108,17 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp
* Parse the data in the frame.
*/
skb_pull(skb, X25_STD_MIN_LEN);
- skb_pull(skb, x25_addr_ntoa(skb->data, &source_addr, &dest_addr));
- skb_pull(skb,
- x25_parse_facilities(skb, &x25->facilities,
+
+ len = x25_parse_address_block(skb, &source_addr,
+ &dest_addr);
+ if (len > 0)
+ skb_pull(skb, len);
+
+ len = x25_parse_facilities(skb, &x25->facilities,
&x25->dte_facilities,
- &x25->vc_facil_mask));
+ &x25->vc_facil_mask);
+ if (len > 0)
+ skb_pull(skb, len);
/*
* Copy any Call User Data.
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 21:33:50 +0000