From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Qiujun Huang <hqjagain@gmail.com>,
syzbot+b1c61e5f11be5782f192@syzkaller.appspotmail.com,
Kalle Valo <kvalo@codeaurora.org>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 004/175] ath9k: Fix use-after-free Write in ath9k_htc_rx_msg
Date: Mon, 8 Jun 2020 19:15:57 -0400 [thread overview]
Message-ID: <20200608231848.3366970-4-sashal@kernel.org> (raw)
In-Reply-To: <20200608231848.3366970-1-sashal@kernel.org>
From: Qiujun Huang <hqjagain@gmail.com>
[ Upstream commit e4ff08a4d727146bb6717a39a8d399d834654345 ]
Write out of slab bounds. We should check epid.
The case reported by syzbot:
https://lore.kernel.org/linux-usb/0000000000006ac55b05a1c05d72@google.com
BUG: KASAN: use-after-free in htc_process_conn_rsp
drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline]
BUG: KASAN: use-after-free in ath9k_htc_rx_msg+0xa25/0xaf0
drivers/net/wireless/ath/ath9k/htc_hst.c:443
Write of size 2 at addr ffff8881cea291f0 by task swapper/1/0
Call Trace:
htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131
[inline]
ath9k_htc_rx_msg+0xa25/0xaf0
drivers/net/wireless/ath/ath9k/htc_hst.c:443
ath9k_hif_usb_reg_in_cb+0x1ba/0x630
drivers/net/wireless/ath/ath9k/hif_usb.c:718
__usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716
dummy_timer+0x1258/0x32ae drivers/usb/gadget/udc/dummy_hcd.c:1966
call_timer_fn+0x195/0x6f0 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1786
Reported-and-tested-by: syzbot+b1c61e5f11be5782f192@syzkaller.appspotmail.com
Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200404041838.10426-4-hqjagain@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath9k/htc_hst.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/ath/ath9k/htc_hst.c b/drivers/net/wireless/ath/ath9k/htc_hst.c
index d091c8ebdcf0..f705f0e1cb5b 100644
--- a/drivers/net/wireless/ath/ath9k/htc_hst.c
+++ b/drivers/net/wireless/ath/ath9k/htc_hst.c
@@ -113,6 +113,9 @@ static void htc_process_conn_rsp(struct htc_target *target,
if (svc_rspmsg->status == HTC_SERVICE_SUCCESS) {
epid = svc_rspmsg->endpoint_id;
+ if (epid < 0 || epid >= ENDPOINT_MAX)
+ return;
+
service_id = be16_to_cpu(svc_rspmsg->service_id);
max_msglen = be16_to_cpu(svc_rspmsg->max_msg_len);
endpoint = &target->endpoint[epid];
--
2.25.1
next prev parent reply other threads:[~2020-06-09 0:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200608231848.3366970-1-sashal@kernel.org>
2020-06-08 23:15 ` [PATCH AUTOSEL 5.4 002/175] ath10k: Fix the race condition in firmware dump work queue Sasha Levin
2020-06-08 23:15 ` [PATCH AUTOSEL 5.4 003/175] ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:15 ` Sasha Levin [this message]
2020-06-08 23:15 ` [PATCH AUTOSEL 5.4 005/175] ath9k: Fix use-after-free Read in htc_connect_service Sasha Levin
2020-06-08 23:16 ` [PATCH AUTOSEL 5.4 023/175] ath10k: remove the max_sched_scan_reqs value Sasha Levin
2020-06-08 23:16 ` [PATCH AUTOSEL 5.4 026/175] rtw88: fix an issue about leak system resources Sasha Levin
2020-06-08 23:16 ` [PATCH AUTOSEL 5.4 062/175] ath10k: fix kernel null pointer dereference Sasha Levin
2020-06-08 23:16 ` [PATCH AUTOSEL 5.4 063/175] ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx Sasha Levin
2020-06-08 23:16 ` [PATCH AUTOSEL 5.4 064/175] ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 067/175] brcmfmac: fix wrong location to get firmware feature Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 077/175] ath10k: add flush tx packets for SDIO chip Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 098/175] ath9k_htc: Silence undersized packet warnings Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 099/175] libertas_tf: avoid a null dereference in pointer priv Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 112/175] iwlwifi: avoid debug max amsdu config overwriting itself Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 116/175] ath10k: Remove msdu from idr when management pkt send fails Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 117/175] wcn36xx: Fix error handling path in 'wcn36xx_probe()' Sasha Levin
2020-06-08 23:17 ` [PATCH AUTOSEL 5.4 120/175] mt76: avoid rx reorder buffer overflow Sasha Levin
2020-06-08 23:18 ` [PATCH AUTOSEL 5.4 128/175] rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup() Sasha Levin
2020-06-08 23:18 ` [PATCH AUTOSEL 5.4 129/175] mwifiex: Fix memory corruption in dump_station Sasha Levin
2020-06-08 23:18 ` [PATCH AUTOSEL 5.4 159/175] iwlwifi: mvm: fix aux station leak Sasha Levin
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