* [PATCH AUTOSEL 5.14 21/40] mac80211: Drop frames from invalid MAC address in ad-hoc mode
[not found] <20211005135020.214291-1-sashal@kernel.org>
@ 2021-10-05 13:50 ` Sasha Levin
2021-10-05 13:50 ` [PATCH AUTOSEL 5.14 26/40] mac80211: check return value of rhashtable_init Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2021-10-05 13:50 UTC (permalink / raw)
To: linux-kernel, stable
Cc: YueHaibing, Johannes Berg, Sasha Levin, johannes, davem, kuba,
linux-wireless, netdev
From: YueHaibing <yuehaibing@huawei.com>
[ Upstream commit a6555f844549cd190eb060daef595f94d3de1582 ]
WARNING: CPU: 1 PID: 9 at net/mac80211/sta_info.c:554
sta_info_insert_rcu+0x121/0x12a0
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u8:1 Not tainted 5.14.0-rc7+ #253
Workqueue: phy3 ieee80211_iface_work
RIP: 0010:sta_info_insert_rcu+0x121/0x12a0
...
Call Trace:
ieee80211_ibss_finish_sta+0xbc/0x170
ieee80211_ibss_work+0x13f/0x7d0
ieee80211_iface_work+0x37a/0x500
process_one_work+0x357/0x850
worker_thread+0x41/0x4d0
If an Ad-Hoc node receives packets with invalid source MAC address,
it hits a WARN_ON in sta_info_insert_check(), this can spam the log.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20210827144230.39944-1-yuehaibing@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/rx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 2563473b5cf1..e023e307c0c3 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4053,7 +4053,8 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
if (!bssid)
return false;
if (ether_addr_equal(sdata->vif.addr, hdr->addr2) ||
- ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2))
+ ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2) ||
+ !is_valid_ether_addr(hdr->addr2))
return false;
if (ieee80211_is_beacon(hdr->frame_control))
return true;
--
2.33.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH AUTOSEL 5.14 26/40] mac80211: check return value of rhashtable_init
[not found] <20211005135020.214291-1-sashal@kernel.org>
2021-10-05 13:50 ` [PATCH AUTOSEL 5.14 21/40] mac80211: Drop frames from invalid MAC address in ad-hoc mode Sasha Levin
@ 2021-10-05 13:50 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2021-10-05 13:50 UTC (permalink / raw)
To: linux-kernel, stable
Cc: MichelleJin, Johannes Berg, Sasha Levin, johannes, davem, kuba,
linux-wireless, netdev
From: MichelleJin <shjy180909@gmail.com>
[ Upstream commit 111461d573741c17eafad029ac93474fa9adcce0 ]
When rhashtable_init() fails, it returns -EINVAL.
However, since error return value of rhashtable_init is not checked,
it can cause use of uninitialized pointers.
So, fix unhandled errors of rhashtable_init.
Signed-off-by: MichelleJin <shjy180909@gmail.com>
Link: https://lore.kernel.org/r/20210927033457.1020967-4-shjy180909@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/mesh_pathtbl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index efbefcbac3ac..7cab1cf09bf1 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -60,7 +60,10 @@ static struct mesh_table *mesh_table_alloc(void)
atomic_set(&newtbl->entries, 0);
spin_lock_init(&newtbl->gates_lock);
spin_lock_init(&newtbl->walk_lock);
- rhashtable_init(&newtbl->rhead, &mesh_rht_params);
+ if (rhashtable_init(&newtbl->rhead, &mesh_rht_params)) {
+ kfree(newtbl);
+ return NULL;
+ }
return newtbl;
}
--
2.33.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2021-10-05 13:50 ` [PATCH AUTOSEL 5.14 21/40] mac80211: Drop frames from invalid MAC address in ad-hoc mode Sasha Levin
2021-10-05 13:50 ` [PATCH AUTOSEL 5.14 26/40] mac80211: check return value of rhashtable_init Sasha Levin
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