From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Zekun Shen <bruceshenzk@gmail.com>,
Brendan Dolan-Gavitt <brendandg@nyu.edu>,
Kalle Valo <kvalo@codeaurora.org>,
Sasha Levin <sashal@kernel.org>,
kvalo@kernel.org, davem@davemloft.net, kuba@kernel.org,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 08/29] mwifiex: Fix skb_over_panic in mwifiex_usb_recv()
Date: Mon, 17 Jan 2022 22:08:01 -0500 [thread overview]
Message-ID: <20220118030822.1955469-8-sashal@kernel.org> (raw)
In-Reply-To: <20220118030822.1955469-1-sashal@kernel.org>
From: Zekun Shen <bruceshenzk@gmail.com>
[ Upstream commit 04d80663f67ccef893061b49ec8a42ff7045ae84 ]
Currently, with an unknown recv_type, mwifiex_usb_recv
just return -1 without restoring the skb. Next time
mwifiex_usb_rx_complete is invoked with the same skb,
calling skb_put causes skb_over_panic.
The bug is triggerable with a compromised/malfunctioning
usb device. After applying the patch, skb_over_panic
no longer shows up with the same input.
Attached is the panic report from fuzzing.
skbuff: skb_over_panic: text:000000003bf1b5fa
len:2048 put:4 head:00000000dd6a115b data:000000000a9445d8
tail:0x844 end:0x840 dev:<NULL>
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 PID: 198 Comm: in:imklog Not tainted 5.6.0 #60
RIP: 0010:skb_panic+0x15f/0x161
Call Trace:
<IRQ>
? mwifiex_usb_rx_complete+0x26b/0xfcd [mwifiex_usb]
skb_put.cold+0x24/0x24
mwifiex_usb_rx_complete+0x26b/0xfcd [mwifiex_usb]
__usb_hcd_giveback_urb+0x1e4/0x380
usb_giveback_urb_bh+0x241/0x4f0
? __hrtimer_run_queues+0x316/0x740
? __usb_hcd_giveback_urb+0x380/0x380
tasklet_action_common.isra.0+0x135/0x330
__do_softirq+0x18c/0x634
irq_exit+0x114/0x140
smp_apic_timer_interrupt+0xde/0x380
apic_timer_interrupt+0xf/0x20
</IRQ>
Reported-by: Brendan Dolan-Gavitt <brendandg@nyu.edu>
Signed-off-by: Zekun Shen <bruceshenzk@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/YX4CqjfRcTa6bVL+@Zekuns-MBP-16.fios-router.home
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mwifiex/usb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mwifiex/usb.c b/drivers/net/wireless/mwifiex/usb.c
index 1be7b219cb202..4cdf6450aeedd 100644
--- a/drivers/net/wireless/mwifiex/usb.c
+++ b/drivers/net/wireless/mwifiex/usb.c
@@ -132,7 +132,8 @@ static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
default:
mwifiex_dbg(adapter, ERROR,
"unknown recv_type %#x\n", recv_type);
- return -1;
+ ret = -1;
+ goto exit_restore_skb;
}
break;
case MWIFIEX_USB_EP_DATA:
--
2.34.1
next prev parent reply other threads:[~2022-01-18 3:16 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-18 3:07 [PATCH AUTOSEL 4.4 01/29] Bluetooth: Fix debugfs entry leak in hci_register_dev() Sasha Levin
2022-01-18 3:07 ` [PATCH AUTOSEL 4.4 02/29] fs: dlm: filter user dlm messages for kernel locks Sasha Levin
2022-01-18 3:07 ` [PATCH AUTOSEL 4.4 03/29] ar5523: Fix null-ptr-deref with unexpected WDCMSG_TARGET_START reply Sasha Levin
2022-01-18 3:07 ` [PATCH AUTOSEL 4.4 04/29] usb: gadget: f_fs: Use stream_open() for endpoint files Sasha Levin
2022-01-18 3:07 ` [PATCH AUTOSEL 4.4 05/29] media: b2c2: Add missing check in flexcop_pci_isr: Sasha Levin
2022-01-18 3:07 ` [PATCH AUTOSEL 4.4 06/29] ARM: imx: rename DEBUG_IMX21_IMX27_UART to DEBUG_IMX27_UART Sasha Levin
2022-01-20 10:08 ` Pavel Machek
2022-01-22 19:27 ` Sasha Levin
2022-01-22 20:45 ` Pavel Machek
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 07/29] HSI: core: Fix return freed object in hsi_new_client Sasha Levin
2022-01-18 3:08 ` Sasha Levin [this message]
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 09/29] floppy: Add max size check for user space request Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 10/29] media: saa7146: hexium_orion: Fix a NULL pointer dereference in hexium_attach() Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 11/29] media: m920x: don't use stack on USB reads Sasha Levin
2022-01-20 10:26 ` Pavel Machek
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 12/29] iwlwifi: mvm: synchronize with FW after multicast commands Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 13/29] net: Enable neighbor sysctls that is save for userns root Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 14/29] net: bonding: debug: avoid printing debug logs when bond is not notifying peers Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 15/29] media: igorplugusb: receiver overflow should be reported Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 16/29] media: saa7146: hexium_gemini: Fix a NULL pointer dereference in hexium_attach() Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 17/29] usb: hub: Add delay for SuperSpeed hub resume to let links transit to U0 Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 18/29] ath9k: Fix out-of-bound memcpy in ath9k_hif_usb_rx_stream Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 19/29] um: registers: Rename function names to avoid conflicts and build problems Sasha Levin
2022-01-18 8:04 ` Johannes Berg
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 20/29] ACPICA: Utilities: Avoid deleting the same object twice in a row Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 21/29] ACPICA: Executer: Fix the REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R() Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 22/29] btrfs: remove BUG_ON() in find_parent_nodes() Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 23/29] btrfs: remove BUG_ON(!eie) in find_parent_nodes Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 24/29] net: mdio: Demote probed message to debug print Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 25/29] dm btree: add a defensive bounds check to insert_at() Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 26/29] dm space map common: add bounds check to sm_ll_lookup_bitmap() Sasha Levin
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 27/29] serial: pl010: Drop CR register reset on set_termios Sasha Levin
2022-01-18 16:43 ` Lukas Wunner
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 28/29] serial: core: Keep mctrl register state and cached copy in sync Sasha Levin
2022-01-18 6:03 ` Greg Kroah-Hartman
2022-01-18 3:08 ` [PATCH AUTOSEL 4.4 29/29] parisc: Avoid calling faulthandler_disabled() twice Sasha Levin
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