From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Minsuk Kang" <linuxlovemin@yonsei.ac.kr>,
"Dokyung Song" <dokyungs@yonsei.ac.kr>,
"Jisoo Jang" <jisoo.jang@yonsei.ac.kr>,
"Toke Høiland-Jørgensen" <toke@toke.dk>,
"Kalle Valo" <quic_kvalo@quicinc.com>,
"Sasha Levin" <sashal@kernel.org>,
kvalo@kernel.org, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 6.2 01/53] wifi: ath9k: Fix use-after-free in ath9k_hif_usb_disconnect()
Date: Sun, 26 Feb 2023 09:43:53 -0500 [thread overview]
Message-ID: <20230226144446.824580-1-sashal@kernel.org> (raw)
From: Minsuk Kang <linuxlovemin@yonsei.ac.kr>
[ Upstream commit f099c5c9e2ba08a379bd354a82e05ef839ae29ac ]
This patch fixes a use-after-free in ath9k that occurs in
ath9k_hif_usb_disconnect() when ath9k_destroy_wmi() is trying to access
'drv_priv' that has already been freed by ieee80211_free_hw(), called by
ath9k_htc_hw_deinit(). The patch moves ath9k_destroy_wmi() before
ieee80211_free_hw(). Note that urbs from the driver should be killed
before freeing 'wmi' with ath9k_destroy_wmi() as their callbacks will
access 'wmi'.
Found by a modified version of syzkaller.
==================================================================
BUG: KASAN: use-after-free in ath9k_destroy_wmi+0x38/0x40
Read of size 8 at addr ffff8881069132a0 by task kworker/0:1/7
CPU: 0 PID: 7 Comm: kworker/0:1 Tainted: G O 5.14.0+ #131
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
dump_stack_lvl+0x8e/0xd1
print_address_description.constprop.0.cold+0x93/0x334
? ath9k_destroy_wmi+0x38/0x40
? ath9k_destroy_wmi+0x38/0x40
kasan_report.cold+0x83/0xdf
? ath9k_destroy_wmi+0x38/0x40
ath9k_destroy_wmi+0x38/0x40
ath9k_hif_usb_disconnect+0x329/0x3f0
? ath9k_hif_usb_suspend+0x120/0x120
? usb_disable_interface+0xfc/0x180
usb_unbind_interface+0x19b/0x7e0
? usb_autoresume_device+0x50/0x50
device_release_driver_internal+0x44d/0x520
bus_remove_device+0x2e5/0x5a0
device_del+0x5b2/0xe30
? __device_link_del+0x370/0x370
? usb_remove_ep_devs+0x43/0x80
? remove_intf_ep_devs+0x112/0x1a0
usb_disable_device+0x1e3/0x5a0
usb_disconnect+0x267/0x870
hub_event+0x168d/0x3950
? rcu_read_lock_sched_held+0xa1/0xd0
? hub_port_debounce+0x2e0/0x2e0
? check_irq_usage+0x860/0xf20
? drain_workqueue+0x281/0x360
? lock_release+0x640/0x640
? rcu_read_lock_sched_held+0xa1/0xd0
? rcu_read_lock_bh_held+0xb0/0xb0
? lockdep_hardirqs_on_prepare+0x273/0x3e0
process_one_work+0x92b/0x1460
? pwq_dec_nr_in_flight+0x330/0x330
? rwlock_bug.part.0+0x90/0x90
worker_thread+0x95/0xe00
? __kthread_parkme+0x115/0x1e0
? process_one_work+0x1460/0x1460
kthread+0x3a1/0x480
? set_kthread_struct+0x120/0x120
ret_from_fork+0x1f/0x30
The buggy address belongs to the page:
page:ffffea00041a44c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106913
flags: 0x200000000000000(node=0|zone=2)
raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), pid 7, ts 38347963444, free_ts 41399957635
prep_new_page+0x1aa/0x240
get_page_from_freelist+0x159a/0x27c0
__alloc_pages+0x2da/0x6a0
alloc_pages+0xec/0x1e0
kmalloc_order+0x39/0xf0
kmalloc_order_trace+0x19/0x120
__kmalloc+0x308/0x390
wiphy_new_nm+0x6f5/0x1dd0
ieee80211_alloc_hw_nm+0x36d/0x2230
ath9k_htc_probe_device+0x9d/0x1e10
ath9k_htc_hw_init+0x34/0x50
ath9k_hif_usb_firmware_cb+0x25f/0x4e0
request_firmware_work_func+0x131/0x240
process_one_work+0x92b/0x1460
worker_thread+0x95/0xe00
kthread+0x3a1/0x480
page last free stack trace:
free_pcp_prepare+0x3d3/0x7f0
free_unref_page+0x1e/0x3d0
device_release+0xa4/0x240
kobject_put+0x186/0x4c0
put_device+0x20/0x30
ath9k_htc_disconnect_device+0x1cf/0x2c0
ath9k_htc_hw_deinit+0x26/0x30
ath9k_hif_usb_disconnect+0x2d9/0x3f0
usb_unbind_interface+0x19b/0x7e0
device_release_driver_internal+0x44d/0x520
bus_remove_device+0x2e5/0x5a0
device_del+0x5b2/0xe30
usb_disable_device+0x1e3/0x5a0
usb_disconnect+0x267/0x870
hub_event+0x168d/0x3950
process_one_work+0x92b/0x1460
Memory state around the buggy address:
ffff888106913180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888106913200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888106913280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff888106913300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888106913380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
Reported-by: Dokyung Song <dokyungs@yonsei.ac.kr>
Reported-by: Jisoo Jang <jisoo.jang@yonsei.ac.kr>
Reported-by: Minsuk Kang <linuxlovemin@yonsei.ac.kr>
Signed-off-by: Minsuk Kang <linuxlovemin@yonsei.ac.kr>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20221205014308.1617597-1-linuxlovemin@yonsei.ac.kr
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath9k/hif_usb.c | 2 --
drivers/net/wireless/ath/ath9k/htc_drv_init.c | 2 ++
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index 1a2e0c7eeb023..86ede591dafaf 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -1411,8 +1411,6 @@ static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
if (hif_dev->flags & HIF_USB_READY) {
ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
- ath9k_hif_usb_dev_deinit(hif_dev);
- ath9k_destroy_wmi(hif_dev->htc_handle->drv_priv);
ath9k_htc_hw_free(hif_dev->htc_handle);
}
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 07ac88fb1c577..96a3185a96d75 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -988,6 +988,8 @@ void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
ath9k_deinit_device(htc_handle->drv_priv);
ath9k_stop_wmi(htc_handle->drv_priv);
+ ath9k_hif_usb_dealloc_urbs((struct hif_device_usb *)htc_handle->hif_dev);
+ ath9k_destroy_wmi(htc_handle->drv_priv);
ieee80211_free_hw(htc_handle->drv_priv->hw);
}
}
--
2.39.0
next reply other threads:[~2023-02-26 14:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-26 14:43 Sasha Levin [this message]
2023-02-26 14:43 ` [PATCH AUTOSEL 6.2 02/53] wifi: ath11k: fix monitor mode bringup crash Sasha Levin
2023-02-26 14:43 ` [PATCH AUTOSEL 6.2 03/53] wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds() Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 09/53] wifi: ath11k: debugfs: fix to work with multiple PCI devices Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 14/53] wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 15/53] wifi: rtw89: fix assignation of TX BD RAM table Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 16/53] wifi: mt7601u: fix an integer underflow Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 17/53] inet: fix fast path in __inet_hash_connect() Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 18/53] ice: restrict PTP HW clock freq adjustments to 100, 000, 000 PPB Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 19/53] ice: add missing checks for PF vsi type Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 26/53] netpoll: Remove 4s sleep during carrier detection Sasha Levin
2023-02-27 18:15 ` Jakub Kicinski
2023-03-01 2:10 ` Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 27/53] net: bcmgenet: Add a check for oversized packets Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 30/53] netfilter: nf_tables: NULL pointer dereference in nf_tables_updobj() Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 31/53] neighbor: fix proxy_delay usage when it is zero Sasha Levin
2023-02-27 18:15 ` Jakub Kicinski
2023-03-01 14:13 ` Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 32/53] can: isotp: check CAN address family in isotp_bind() Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 36/53] wifi: mt76: dma: free rx_head in mt76_dma_rx_cleanup Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 38/53] net/mlx5: fw_tracer: Fix debug print Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 48/53] wifi: rtw89: debug: avoid invalid access on RTW89_DBG_SEL_MAC_30 Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 49/53] hv_netvsc: Check status in SEND_RNDIS_PKT completion message Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 51/53] devlink: health: Fix nla_nest_end in error flow Sasha Levin
2023-02-27 18:13 ` Jakub Kicinski
2023-03-01 14:13 ` Sasha Levin
2023-02-26 14:44 ` [PATCH AUTOSEL 6.2 53/53] scm: add user copy checks to put_cmsg() Sasha Levin
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