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linux/drivers/net/usb
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Andrey Konovalov baedf68a06 net: usb: asix: fill null-ptr-deref in asix_suspend 
When asix_suspend() is called dev->driver_priv might not have been
assigned a value, so we need to check that it's not NULL.

Found by syzkaller.

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.14.0-rc4-43422-geccacdd69a8c #400
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Workqueue: usb_hub_wq hub_event
task: ffff88006bb36300 task.stack: ffff88006bba8000
RIP: 0010:asix_suspend+0x76/0xc0 drivers/net/usb/asix_devices.c:629
RSP: 0018:ffff88006bbae718 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff880061ba3b80 RCX: 1ffff1000c34d644
RDX: 0000000000000001 RSI: 0000000000000402 RDI: 0000000000000008
RBP: ffff88006bbae738 R08: 1ffff1000d775cad R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800630a8b40
R13: 0000000000000000 R14: 0000000000000402 R15: ffff880061ba3b80
FS:  0000000000000000(0000) GS:ffff88006c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff33cf89000 CR3: 0000000061c0a000 CR4: 00000000000006f0
Call Trace:
 usb_suspend_interface drivers/usb/core/driver.c:1209
 usb_suspend_both+0x27f/0x7e0 drivers/usb/core/driver.c:1314
 usb_runtime_suspend+0x41/0x120 drivers/usb/core/driver.c:1852
 __rpm_callback+0x339/0xb60 drivers/base/power/runtime.c:334
 rpm_callback+0x106/0x220 drivers/base/power/runtime.c:461
 rpm_suspend+0x465/0x1980 drivers/base/power/runtime.c:596
 __pm_runtime_suspend+0x11e/0x230 drivers/base/power/runtime.c:1009
 pm_runtime_put_sync_autosuspend ./include/linux/pm_runtime.h:251
 usb_new_device+0xa37/0x1020 drivers/usb/core/hub.c:2487
 hub_port_connect drivers/usb/core/hub.c:4903
 hub_port_connect_change drivers/usb/core/hub.c:5009
 port_event drivers/usb/core/hub.c:5115
 hub_event+0x194d/0x3740 drivers/usb/core/hub.c:5195
 process_one_work+0xc7f/0x1db0 kernel/workqueue.c:2119
 worker_thread+0x221/0x1850 kernel/workqueue.c:2253
 kthread+0x3a1/0x470 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431
Code: 8d 7c 24 20 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5b 48 b8 00 00
00 00 00 fc ff df 4d 8b 6c 24 20 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80>
3c 02 00 75 34 4d 8b 6d 08 4d 85 ed 74 0b e8 26 2b 51 fd 4c
RIP: asix_suspend+0x76/0xc0 RSP: ffff88006bbae718
---[ end trace dfc4f5649284342c ]---

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-04 22:42:09 +09:00
..
asix_common.c asix: Fix small memory leak in ax88772_unbind() 2017-08-07 10:10:19 -07:00
asix_devices.c net: usb: asix: fill null-ptr-deref in asix_suspend 2017-11-04 22:42:09 +09:00
asix.h asix: Fix small memory leak in ax88772_unbind() 2017-08-07 10:10:19 -07:00
ax88172a.c net: usbnet: support 64bit stats 2017-04-03 19:09:40 -07:00
ax88179_178a.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-06-30 12:43:08 -04:00
catc.c net: usb: catc: constify usb_device_id and fix space before '[' error 2017-08-08 17:47:58 -07:00
cdc_eem.c
cdc_ether.c cdc_ether: flag the Huawei ME906/ME909 as WWAN 2017-10-24 18:32:54 +09:00
cdc_mbim.c net: cdc_mbim: apply "NDP to end" quirk to HP lt4132 2017-07-03 02:19:36 -07:00
cdc_ncm.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
cdc_subset.c
cdc-phonet.c net: usb: cdc-phonet: constify usb_device_id 2017-08-08 17:47:58 -07:00
ch9200.c net: ch9200: add missing USB-descriptor endianness conversions 2017-05-12 12:15:46 -04:00
cx82310_eth.c cx82310_eth: use skb_cow_head() to deal with cloned skbs 2017-04-21 13:24:05 -04:00
dm9601.c net: usbnet: support 64bit stats 2017-04-03 19:09:40 -07:00
gl620a.c networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
hso.c net: manual clean code which call skb_put_[data:zero] 2017-06-20 13:30:15 -04:00
huawei_cdc_ncm.c cdc_ncm: Set NTB format again after altsetting switch for Huawei devices 2017-07-14 08:15:05 -07:00
int51x1.c net: introduce __skb_put_[zero, data, u8] 2017-06-20 13:30:14 -04:00
ipheth.c net: usb: ipheth: constify usb_device_id 2017-08-08 17:47:58 -07:00
kalmia.c networking: convert many more places to skb_put_zero() 2017-06-16 11:48:35 -04:00
kaweth.c net: usb: kaweth: constify usb_device_id 2017-08-08 17:47:59 -07:00
Kconfig usb: plusb: Add support for PL-27A1 2017-04-25 10:08:16 -04:00
lan78xx.c lan78xx: Use default values loaded from EEPROM/OTP after reset 2017-09-21 15:22:53 -07:00
lan78xx.h
lg-vl600.c networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mcs7830.c net: usbnet: support 64bit stats 2017-04-03 19:09:40 -07:00
net1080.c networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
pegasus.c usbnet: pegasus: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
pegasus.h usbnet: pegasus: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
plusb.c usb: plusb: Add support for PL-27A1 2017-04-25 10:08:16 -04:00
qmi_wwan.c qmi_wwan: fix NULL deref on disconnect 2017-08-08 21:14:16 -07:00
r8152.c drivers/net/usb: add device id for TP-LINK UE300 USB 3.0 Ethernet 2017-10-24 18:31:14 +09:00
rndis_host.c rndis_host: support Novatel Verizon USB730L 2017-10-03 14:30:46 -07:00
rtl8150.c net: usb: rtl8150: constify usb_device_id 2017-08-08 17:47:59 -07:00
sierra_net.c net: usbnet: support 64bit stats 2017-04-03 19:09:40 -07:00
smsc75xx.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-21 20:23:53 -07:00
smsc75xx.h
smsc95xx.c smsc95xx: Configure pause time to 0xffff when tx flow control enabled 2017-09-12 20:36:30 -07:00
smsc95xx.h smsc95xx: Add comments to the registers definition 2017-04-17 13:04:52 -04:00
sr9700.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-21 20:23:53 -07:00
sr9700.h
sr9800.c net: usbnet: support 64bit stats 2017-04-03 19:09:40 -07:00
sr9800.h
usbnet.c net/{mii, smsc}: Make mii_ethtool_get_link_ksettings and smc_netdev_get_ecmd return void 2017-06-05 11:00:42 -04:00
zaurus.c networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00