From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Lee Gibson <leegib@gmail.com>, Kalle Valo <kvalo@codeaurora.org>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 73/85] qtnfmac: Fix possible buffer overflow in qtnf_event_handle_external_auth
Date: Wed, 5 May 2021 12:36:36 -0400 [thread overview]
Message-ID: <20210505163648.3462507-73-sashal@kernel.org> (raw)
In-Reply-To: <20210505163648.3462507-1-sashal@kernel.org>
From: Lee Gibson <leegib@gmail.com>
[ Upstream commit 130f634da1af649205f4a3dd86cbe5c126b57914 ]
Function qtnf_event_handle_external_auth calls memcpy without
checking the length.
A user could control that length and trigger a buffer overflow.
Fix by checking the length is within the maximum allowed size.
Signed-off-by: Lee Gibson <leegib@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210419145842.345787-1-leegib@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/quantenna/qtnfmac/event.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c b/drivers/net/wireless/quantenna/qtnfmac/event.c
index c775c177933b..8dc80574d08d 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -570,8 +570,10 @@ qtnf_event_handle_external_auth(struct qtnf_vif *vif,
return 0;
if (ev->ssid_len) {
- memcpy(auth.ssid.ssid, ev->ssid, ev->ssid_len);
- auth.ssid.ssid_len = ev->ssid_len;
+ int len = clamp_val(ev->ssid_len, 0, IEEE80211_MAX_SSID_LEN);
+
+ memcpy(auth.ssid.ssid, ev->ssid, len);
+ auth.ssid.ssid_len = len;
}
auth.key_mgmt_suite = le32_to_cpu(ev->akm_suite);
--
2.30.2
next prev parent reply other threads:[~2021-05-05 16:57 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 16:35 [PATCH AUTOSEL 5.10 01/85] ath11k: fix thermal temperature read Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 06/85] tipc: convert dest node's address to network order Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 08/85] net/mlx5e: Use net_prefetchw instead of prefetchw in MPWQE TX datapath Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 09/85] net: stmmac: Set FIFO sizes for ipq806x Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 11/85] Documentation: networking: switchdev: fix command for static FDB entries Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 12/85] Bluetooth: Fix incorrect status handling in LE PHY UPDATE event Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 18/85] Bluetooth: Set CONF_NOT_COMPLETE as l2cap_chan default Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 19/85] Bluetooth: verify AMP hci_chan before amp_destroy Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 20/85] Bluetooth: initialize skb_queue_head at l2cap_chan_create() Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 21/85] net/sched: cls_flower: use ntohs for struct flow_dissector_key_ports Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 22/85] net: bridge: when suppression is enabled exclude RARP packets Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 23/85] Bluetooth: check for zapped sk before connecting Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 26/85] net: hns3: remediate a potential overflow risk of bd_num_list Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 27/85] net: hns3: add handling for xmit skb with recursive fraglist Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 28/85] ip6_vti: proper dev_{hold|put} in ndo_[un]init methods Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 30/85] ice: handle increasing Tx or Rx ring sizes Sasha Levin
2021-05-05 16:35 ` [PATCH AUTOSEL 5.10 31/85] net: usb: ax88179_178a: initialize local variables before use Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 38/85] mac80211: clear the beacon's CRC after channel switch Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 40/85] rtw88: 8822c: add LC calibration for RTL8822C Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 41/85] mt76: mt7615: support loading EEPROM for MT7613BE Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 42/85] mt76: mt76x0: disable GTK offloading Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 43/85] mt76: mt7915: fix txpower init for TSSI off chips Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 47/85] iwlwifi: pcie: make cfg vs. trans_cfg more robust Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 53/85] selftests: Set CC to clang in lib.mk if LLVM is set Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 58/85] sctp: Fix out-of-bounds warning in sctp_process_asconf_param() Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 59/85] flow_dissector: Fix out-of-bounds warning in __skb_flow_bpf_to_target() Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 62/85] ethtool: ioctl: Fix out-of-bounds warning in store_link_ksettings_for_user() Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 63/85] net: sched: tapr: prevent cycle_time == 0 in parse_taprio_schedule Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 64/85] samples/bpf: Fix broken tracex1 due to kprobe argument change Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 69/85] mt76: mt7615: fix entering driver-own state on mt7663 Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 71/85] wl3501_cs: Fix out-of-bounds warnings in wl3501_send_pkt Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 72/85] wl3501_cs: Fix out-of-bounds warnings in wl3501_mgmt_join Sasha Levin
2021-05-05 16:36 ` Sasha Levin [this message]
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 75/85] iavf: remove duplicate free resources calls Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 76/85] net: ethernet: mtk_eth_soc: fix RX VLAN offload Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 77/85] selftests: mlxsw: Increase the tolerance of backlog buildup Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 78/85] selftests: mlxsw: Fix mausezahn invocation in ERSPAN scale test Sasha Levin
2021-05-05 16:36 ` [PATCH AUTOSEL 5.10 80/85] bnxt_en: Add PCI IDs for Hyper-V VF devices Sasha Levin
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