linux-stable.git/drivers/usb/misc, branch v3.16.79 Linux kernel stable tree USB: iowarrior: fix use-after-free on disconnect 2019-12-10T18:01:37+00:00 Johan Hovold johan@kernel.org 2019-10-09T10:48:41+00:00 bc5b704c76044bf22be57e5adcd100d6005115cc commit edc4746f253d907d048de680a621e121517f484b upstream. A recent fix addressing a deadlock on disconnect introduced a new bug by moving the present flag out of the critical section protected by the driver-data mutex. This could lead to a racing release() freeing the driver data before disconnect() is done with it. Due to insufficient locking a related use-after-free could be triggered also before the above mentioned commit. Specifically, the driver needs to hold the driver-data mutex also while checking the opened flag at disconnect(). Fixes: c468a8aa790e ("usb: iowarrior: fix deadlock on disconnect") Fixes: 946b960d13c1 ("USB: add driver for iowarrior devices.") Reported-by: syzbot+0761012cebf7bdb38137@syzkaller.appspotmail.com Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191009104846.5925-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit edc4746f253d907d048de680a621e121517f484b upstream.

A recent fix addressing a deadlock on disconnect introduced a new bug
by moving the present flag out of the critical section protected by the
driver-data mutex. This could lead to a racing release() freeing the
driver data before disconnect() is done with it.

Due to insufficient locking a related use-after-free could be triggered
also before the above mentioned commit. Specifically, the driver needs
to hold the driver-data mutex also while checking the opened flag at
disconnect().

Fixes: c468a8aa790e ("usb: iowarrior: fix deadlock on disconnect")
Fixes: 946b960d13c1 ("USB: add driver for iowarrior devices.")
Reported-by: syzbot+0761012cebf7bdb38137@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191009104846.5925-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
usb: iowarrior: fix deadlock on disconnect 2019-12-10T18:01:36+00:00 Oliver Neukum oneukum@suse.com 2019-08-08T09:27:28+00:00 596710903a2fe55a66089a22b4dbea2390f2f5d8 commit c468a8aa790e0dfe0a7f8a39db282d39c2c00b46 upstream. We have to drop the mutex before we close() upon disconnect() as close() needs the lock. This is safe to do by dropping the mutex as intfdata is already set to NULL, so open() will fail. Fixes: 03f36e885fc26 ("USB: open disconnect race in iowarrior") Reported-by: syzbot+a64a382964bf6c71a9c0@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Link: https://lore.kernel.org/r/20190808092728.23417-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit c468a8aa790e0dfe0a7f8a39db282d39c2c00b46 upstream.

We have to drop the mutex before we close() upon disconnect()
as close() needs the lock. This is safe to do by dropping the
mutex as intfdata is already set to NULL, so open() will fail.

Fixes: 03f36e885fc26 ("USB: open disconnect race in iowarrior")
Reported-by: syzbot+a64a382964bf6c71a9c0@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20190808092728.23417-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
USB: adutux: fix use-after-free on disconnect 2019-12-10T18:01:35+00:00 Johan Hovold johan@kernel.org 2019-09-25T09:29:12+00:00 22cbb8fb12b3b5101260915162ad2b0b56a9284d commit 44efc269db7929f6275a1fa927ef082e533ecde0 upstream. The driver was clearing its struct usb_device pointer, which it used as an inverted disconnected flag, before deregistering the character device and without serialising against racing release(). This could lead to a use-after-free if a racing release() callback observes the cleared pointer and frees the driver data before disconnect() is finished with it. This could also lead to NULL-pointer dereferences in a racing open(). Fixes: f08812d5eb8f ("USB: FIx locks and urb->status in adutux (updated)") Reported-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com Tested-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20190925092913.8608-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit 44efc269db7929f6275a1fa927ef082e533ecde0 upstream.

The driver was clearing its struct usb_device pointer, which it used as
an inverted disconnected flag, before deregistering the character device
and without serialising against racing release().

This could lead to a use-after-free if a racing release() callback
observes the cleared pointer and frees the driver data before
disconnect() is finished with it.

This could also lead to NULL-pointer dereferences in a racing open().

Fixes: f08812d5eb8f ("USB: FIx locks and urb->status in adutux (updated)")
Reported-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com
Tested-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190925092913.8608-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
USB: adutux: remove redundant variable minor 2019-12-10T18:01:34+00:00 Colin Ian King colin.king@canonical.com 2017-11-07T11:45:27+00:00 669ddcc72d26dc8a6e8df7b4d1f0fa896b9748d2 commit 8444efc4a052332d643ed5c8aebcca148c7de032 upstream. Variable minor is being assigned but never read, hence it is redundant and can be removed. Cleans up clang warning: drivers/usb/misc/adutux.c:770:2: warning: Value stored to 'minor' is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [bwh: Backported to 3.16 so that commit 44efc269db79 "USB: adutux: fix use-after-free on disconnect" applies cleanly] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit 8444efc4a052332d643ed5c8aebcca148c7de032 upstream.

Variable minor is being assigned but never read, hence it is redundant
and can be removed. Cleans up clang warning:

drivers/usb/misc/adutux.c:770:2: warning: Value stored to 'minor' is
never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.16 so that commit 44efc269db79 "USB: adutux: fix
 use-after-free on disconnect" applies cleanly]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
usb: yurex: Fix use-after-free in yurex_delete 2019-11-22T15:57:12+00:00 Suzuki K Poulose suzuki.poulose@arm.com 2019-08-05T11:15:28+00:00 8f6204f2adba5354b65bd0f37b8d930e49df6420 commit fc05481b2fcabaaeccf63e32ac1baab54e5b6963 upstream. syzbot reported the following crash [0]: BUG: KASAN: use-after-free in usb_free_coherent+0x79/0x80 drivers/usb/core/usb.c:928 Read of size 8 at addr ffff8881b18599c8 by task syz-executor.4/16007 CPU: 0 PID: 16007 Comm: syz-executor.4 Not tainted 5.3.0-rc2+ #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 print_address_description+0x6a/0x32c mm/kasan/report.c:351 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482 kasan_report+0xe/0x12 mm/kasan/common.c:612 usb_free_coherent+0x79/0x80 drivers/usb/core/usb.c:928 yurex_delete+0x138/0x330 drivers/usb/misc/yurex.c:100 kref_put include/linux/kref.h:65 [inline] yurex_release+0x66/0x90 drivers/usb/misc/yurex.c:392 __fput+0x2d7/0x840 fs/file_table.c:280 task_work_run+0x13f/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413511 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffc424ea2e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000413511 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 0000000000000001 R08: 0000000029a2fc22 R09: 0000000029a2fc26 R10: 00007ffc424ea3c0 R11: 0000000000000293 R12: 000000000075c9a0 R13: 000000000075c9a0 R14: 0000000000761938 R15: ffffffffffffffff Allocated by task 2776: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:487 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:460 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:748 [inline] usb_alloc_dev+0x51/0xf95 drivers/usb/core/usb.c:583 hub_port_connect drivers/usb/core/hub.c:5004 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x15c0/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Freed by task 16007: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:449 slab_free_hook mm/slub.c:1423 [inline] slab_free_freelist_hook mm/slub.c:1470 [inline] slab_free mm/slub.c:3012 [inline] kfree+0xe4/0x2f0 mm/slub.c:3953 device_release+0x71/0x200 drivers/base/core.c:1064 kobject_cleanup lib/kobject.c:693 [inline] kobject_release lib/kobject.c:722 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x171/0x280 lib/kobject.c:739 put_device+0x1b/0x30 drivers/base/core.c:2213 usb_put_dev+0x1f/0x30 drivers/usb/core/usb.c:725 yurex_delete+0x40/0x330 drivers/usb/misc/yurex.c:95 kref_put include/linux/kref.h:65 [inline] yurex_release+0x66/0x90 drivers/usb/misc/yurex.c:392 __fput+0x2d7/0x840 fs/file_table.c:280 task_work_run+0x13f/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8881b1859980 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 72 bytes inside of 2048-byte region [ffff8881b1859980, ffff8881b185a180) The buggy address belongs to the page: page:ffffea0006c61600 refcount:1 mapcount:0 mapping:ffff8881da00c000 index:0x0 compound_mapcount: 0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 0000000000000000 0000000100000001 ffff8881da00c000 raw: 0000000000000000 00000000000f000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881b1859880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881b1859900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc > ffff8881b1859980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881b1859a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881b1859a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== A quick look at the yurex_delete() shows that we drop the reference to the usb_device before releasing any buffers associated with the device. Delay the reference drop until we have finished the cleanup. [0] https://lore.kernel.org/lkml/0000000000003f86d8058f0bd671@google.com/ Fixes: 6bc235a2e24a5e ("USB: add driver for Meywa-Denki & Kayac YUREX") Cc: Jiri Kosina <jkosina@suse.cz> Cc: Tomoki Sekiyama <tomoki.sekiyama@gmail.com> Cc: Oliver Neukum <oneukum@suse.com> Cc: andreyknvl@google.com Cc: gregkh@linuxfoundation.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: syzkaller-bugs@googlegroups.com Cc: dtor@chromium.org Reported-by: syzbot+d1fedb1c1fdb07fca507@syzkaller.appspotmail.com Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20190805111528.6758-1-suzuki.poulose@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit fc05481b2fcabaaeccf63e32ac1baab54e5b6963 upstream.

syzbot reported the following crash [0]:

BUG: KASAN: use-after-free in usb_free_coherent+0x79/0x80
drivers/usb/core/usb.c:928
Read of size 8 at addr ffff8881b18599c8 by task syz-executor.4/16007

CPU: 0 PID: 16007 Comm: syz-executor.4 Not tainted 5.3.0-rc2+ #23
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0xca/0x13e lib/dump_stack.c:113
  print_address_description+0x6a/0x32c mm/kasan/report.c:351
  __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482
  kasan_report+0xe/0x12 mm/kasan/common.c:612
  usb_free_coherent+0x79/0x80 drivers/usb/core/usb.c:928
  yurex_delete+0x138/0x330 drivers/usb/misc/yurex.c:100
  kref_put include/linux/kref.h:65 [inline]
  yurex_release+0x66/0x90 drivers/usb/misc/yurex.c:392
  __fput+0x2d7/0x840 fs/file_table.c:280
  task_work_run+0x13f/0x1c0 kernel/task_work.c:113
  tracehook_notify_resume include/linux/tracehook.h:188 [inline]
  exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163
  prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
  syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
  do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413511
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48
83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48
89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffc424ea2e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000413511
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 0000000000000001 R08: 0000000029a2fc22 R09: 0000000029a2fc26
R10: 00007ffc424ea3c0 R11: 0000000000000293 R12: 000000000075c9a0
R13: 000000000075c9a0 R14: 0000000000761938 R15: ffffffffffffffff

Allocated by task 2776:
  save_stack+0x1b/0x80 mm/kasan/common.c:69
  set_track mm/kasan/common.c:77 [inline]
  __kasan_kmalloc mm/kasan/common.c:487 [inline]
  __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:460
  kmalloc include/linux/slab.h:552 [inline]
  kzalloc include/linux/slab.h:748 [inline]
  usb_alloc_dev+0x51/0xf95 drivers/usb/core/usb.c:583
  hub_port_connect drivers/usb/core/hub.c:5004 [inline]
  hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
  port_event drivers/usb/core/hub.c:5359 [inline]
  hub_event+0x15c0/0x3640 drivers/usb/core/hub.c:5441
  process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
  worker_thread+0x96/0xe20 kernel/workqueue.c:2415
  kthread+0x318/0x420 kernel/kthread.c:255
  ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 16007:
  save_stack+0x1b/0x80 mm/kasan/common.c:69
  set_track mm/kasan/common.c:77 [inline]
  __kasan_slab_free+0x130/0x180 mm/kasan/common.c:449
  slab_free_hook mm/slub.c:1423 [inline]
  slab_free_freelist_hook mm/slub.c:1470 [inline]
  slab_free mm/slub.c:3012 [inline]
  kfree+0xe4/0x2f0 mm/slub.c:3953
  device_release+0x71/0x200 drivers/base/core.c:1064
  kobject_cleanup lib/kobject.c:693 [inline]
  kobject_release lib/kobject.c:722 [inline]
  kref_put include/linux/kref.h:65 [inline]
  kobject_put+0x171/0x280 lib/kobject.c:739
  put_device+0x1b/0x30 drivers/base/core.c:2213
  usb_put_dev+0x1f/0x30 drivers/usb/core/usb.c:725
  yurex_delete+0x40/0x330 drivers/usb/misc/yurex.c:95
  kref_put include/linux/kref.h:65 [inline]
  yurex_release+0x66/0x90 drivers/usb/misc/yurex.c:392
  __fput+0x2d7/0x840 fs/file_table.c:280
  task_work_run+0x13f/0x1c0 kernel/task_work.c:113
  tracehook_notify_resume include/linux/tracehook.h:188 [inline]
  exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163
  prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
  syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
  do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881b1859980
  which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 72 bytes inside of
  2048-byte region [ffff8881b1859980, ffff8881b185a180)
The buggy address belongs to the page:
page:ffffea0006c61600 refcount:1 mapcount:0 mapping:ffff8881da00c000
index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 0000000000000000 0000000100000001 ffff8881da00c000
raw: 0000000000000000 00000000000f000f 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
  ffff8881b1859880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
  ffff8881b1859900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
> ffff8881b1859980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                               ^
  ffff8881b1859a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff8881b1859a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

A quick look at the yurex_delete() shows that we drop the reference
to the usb_device before releasing any buffers associated with the
device. Delay the reference drop until we have finished the cleanup.

[0] https://lore.kernel.org/lkml/0000000000003f86d8058f0bd671@google.com/

Fixes: 6bc235a2e24a5e ("USB: add driver for Meywa-Denki & Kayac YUREX")
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tomoki Sekiyama <tomoki.sekiyama@gmail.com>
Cc: Oliver Neukum <oneukum@suse.com>
Cc: andreyknvl@google.com
Cc: gregkh@linuxfoundation.org
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: syzkaller-bugs@googlegroups.com
Cc: dtor@chromium.org
Reported-by: syzbot+d1fedb1c1fdb07fca507@syzkaller.appspotmail.com
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20190805111528.6758-1-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
USB: rio500: fix memory leak in close after disconnect 2019-10-05T15:19:39+00:00 Oliver Neukum oneukum@suse.com 2019-05-09T09:30:59+00:00 cd8acfa085e2943ce4063941e1a818d0e747ea53 commit e0feb73428b69322dd5caae90b0207de369b5575 upstream. If a disconnected device is closed, rio_close() must free the buffers. Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit e0feb73428b69322dd5caae90b0207de369b5575 upstream.

If a disconnected device is closed, rio_close() must free
the buffers.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
USB: sisusbvga: fix oops in error path of sisusb_probe 2019-09-23T20:12:14+00:00 Oliver Neukum oneukum@suse.com 2019-05-09T12:41:50+00:00 135b5e3371cdba62761dee1cf6c0e20e48a41ac3 commit 9a5729f68d3a82786aea110b1bfe610be318f80a upstream. The pointer used to log a failure of usb_register_dev() must be set before the error is logged. v2: fix that minor is not available before registration Signed-off-by: oliver Neukum <oneukum@suse.com> Reported-by: syzbot+a0cbdbd6d169020c8959@syzkaller.appspotmail.com Fixes: 7b5cd5fefbe02 ("USB: SisUSB2VGA: Convert printk to dev_* macros") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit 9a5729f68d3a82786aea110b1bfe610be318f80a upstream.

The pointer used to log a failure of usb_register_dev() must
be set before the error is logged.

v2: fix that minor is not available before registration

Signed-off-by: oliver Neukum <oneukum@suse.com>
Reported-by: syzbot+a0cbdbd6d169020c8959@syzkaller.appspotmail.com
Fixes: 7b5cd5fefbe02 ("USB: SisUSB2VGA: Convert printk to dev_* macros")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
USB: rio500: refuse more than one device at a time 2019-09-23T20:12:12+00:00 Oliver Neukum oneukum@suse.com 2019-05-09T09:30:58+00:00 365d2bc245d2b1b2628f80463bdf284544d69c36 commit 3864d33943b4a76c6e64616280e98d2410b1190f upstream. This driver is using a global variable. It cannot handle more than one device at a time. The issue has been existing since the dawn of the driver. Signed-off-by: Oliver Neukum <oneukum@suse.com> Reported-by: syzbot+35f04d136fc975a70da4@syzkaller.appspotmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit 3864d33943b4a76c6e64616280e98d2410b1190f upstream.

This driver is using a global variable. It cannot handle more than
one device at a time. The issue has been existing since the dawn
of the driver.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reported-by: syzbot+35f04d136fc975a70da4@syzkaller.appspotmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
USB: yurex: Fix protection fault after device removal 2019-08-13T11:39:15+00:00 Alan Stern stern@rowland.harvard.edu 2019-04-23T18:48:29+00:00 5133454a1f3a7f22412ab083f7ff53f822d50f49 commit ef61eb43ada6c1d6b94668f0f514e4c268093ff3 upstream. The syzkaller USB fuzzer found a general-protection-fault bug in the yurex driver. The fault occurs when a device has been unplugged; the driver's interrupt-URB handler logs an error message referring to the device by name, after the device has been unregistered and its name deallocated. This problem is caused by the fact that the interrupt URB isn't cancelled until the driver's private data structure is released, which can happen long after the device is gone. The cure is to make sure that the interrupt URB is killed before yurex_disconnect() returns; this is exactly the sort of thing that usb_poison_urb() was meant for. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by: syzbot+2eb9121678bdb36e6d57@syzkaller.appspotmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit ef61eb43ada6c1d6b94668f0f514e4c268093ff3 upstream.

The syzkaller USB fuzzer found a general-protection-fault bug in the
yurex driver.  The fault occurs when a device has been unplugged; the
driver's interrupt-URB handler logs an error message referring to the
device by name, after the device has been unregistered and its name
deallocated.

This problem is caused by the fact that the interrupt URB isn't
cancelled until the driver's private data structure is released, which
can happen long after the device is gone.  The cure is to make sure
that the interrupt URB is killed before yurex_disconnect() returns;
this is exactly the sort of thing that usb_poison_urb() was meant for.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: syzbot+2eb9121678bdb36e6d57@syzkaller.appspotmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
usb: appledisplay: Add 27" Apple Cinema Display 2019-02-11T17:54:19+00:00 Alexander Theissen alex.theissen@me.com 2018-12-04T22:43:35+00:00 ab0b0f367e2160fcaa19282b53a8aeb7215d0622 commit d7859905301880ad3e16272399d26900af3ac496 upstream. Add another Apple Cinema Display to the list of supported displays. Signed-off-by: Alexander Theissen <alex.theissen@me.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit d7859905301880ad3e16272399d26900af3ac496 upstream.

Add another Apple Cinema Display to the list of supported displays.

Signed-off-by: Alexander Theissen <alex.theissen@me.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>