<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/net/wireless, branch linux-4.9.y</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request()</title>
<updated>2023-01-07T11:07:32+00:00</updated>
<author>
<name>Minsuk Kang</name>
<email>linuxlovemin@yonsei.ac.kr</email>
</author>
<published>2022-10-24T07:13:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1db036d13e10809943c2dce553e2fa7fc9c6cd80'/>
<id>1db036d13e10809943c2dce553e2fa7fc9c6cd80</id>
<content type='text'>
[ Upstream commit 81d17f6f3331f03c8eafdacea68ab773426c1e3c ]

This patch fixes a shift-out-of-bounds in brcmfmac that occurs in
BIT(chiprev) when a 'chiprev' provided by the device is too large.
It should also not be equal to or greater than BITS_PER_TYPE(u32)
as we do bitwise AND with a u32 variable and BIT(chiprev). The patch
adds a check that makes the function return NULL if that is the case.
Note that the NULL case is later handled by the bus-specific caller,
brcmf_usb_probe_cb() or brcmf_usb_reset_resume(), for example.

Found by a modified version of syzkaller.

UBSAN: shift-out-of-bounds in drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
shift exponent 151055786 is too large for 64-bit type 'long unsigned int'
CPU: 0 PID: 1885 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132
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+0x57/0x7d
 ubsan_epilogue+0x5/0x40
 __ubsan_handle_shift_out_of_bounds.cold+0x53/0xdb
 ? lock_chain_count+0x20/0x20
 brcmf_fw_alloc_request.cold+0x19/0x3ea
 ? brcmf_fw_get_firmwares+0x250/0x250
 ? brcmf_usb_ioctl_resp_wait+0x1a7/0x1f0
 brcmf_usb_get_fwname+0x114/0x1a0
 ? brcmf_usb_reset_resume+0x120/0x120
 ? number+0x6c4/0x9a0
 brcmf_c_process_clm_blob+0x168/0x590
 ? put_dec+0x90/0x90
 ? enable_ptr_key_workfn+0x20/0x20
 ? brcmf_common_pd_remove+0x50/0x50
 ? rcu_read_lock_sched_held+0xa1/0xd0
 brcmf_c_preinit_dcmds+0x673/0xc40
 ? brcmf_c_set_joinpref_default+0x100/0x100
 ? rcu_read_lock_sched_held+0xa1/0xd0
 ? rcu_read_lock_bh_held+0xb0/0xb0
 ? lock_acquire+0x19d/0x4e0
 ? find_held_lock+0x2d/0x110
 ? brcmf_usb_deq+0x1cc/0x260
 ? mark_held_locks+0x9f/0xe0
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 ? _raw_spin_unlock_irqrestore+0x47/0x50
 ? trace_hardirqs_on+0x1c/0x120
 ? brcmf_usb_deq+0x1a7/0x260
 ? brcmf_usb_rx_fill_all+0x5a/0xf0
 brcmf_attach+0x246/0xd40
 ? wiphy_new_nm+0x1476/0x1d50
 ? kmemdup+0x30/0x40
 brcmf_usb_probe+0x12de/0x1690
 ? brcmf_usbdev_qinit.constprop.0+0x470/0x470
 usb_probe_interface+0x25f/0x710
 really_probe+0x1be/0xa90
 __driver_probe_device+0x2ab/0x460
 ? usb_match_id.part.0+0x88/0xc0
 driver_probe_device+0x49/0x120
 __device_attach_driver+0x18a/0x250
 ? driver_allows_async_probing+0x120/0x120
 bus_for_each_drv+0x123/0x1a0
 ? bus_rescan_devices+0x20/0x20
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 ? trace_hardirqs_on+0x1c/0x120
 __device_attach+0x207/0x330
 ? device_bind_driver+0xb0/0xb0
 ? kobject_uevent_env+0x230/0x12c0
 bus_probe_device+0x1a2/0x260
 device_add+0xa61/0x1ce0
 ? __mutex_unlock_slowpath+0xe7/0x660
 ? __fw_devlink_link_to_suppliers+0x550/0x550
 usb_set_configuration+0x984/0x1770
 ? kernfs_create_link+0x175/0x230
 usb_generic_driver_probe+0x69/0x90
 usb_probe_device+0x9c/0x220
 really_probe+0x1be/0xa90
 __driver_probe_device+0x2ab/0x460
 driver_probe_device+0x49/0x120
 __device_attach_driver+0x18a/0x250
 ? driver_allows_async_probing+0x120/0x120
 bus_for_each_drv+0x123/0x1a0
 ? bus_rescan_devices+0x20/0x20
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 ? trace_hardirqs_on+0x1c/0x120
 __device_attach+0x207/0x330
 ? device_bind_driver+0xb0/0xb0
 ? kobject_uevent_env+0x230/0x12c0
 bus_probe_device+0x1a2/0x260
 device_add+0xa61/0x1ce0
 ? __fw_devlink_link_to_suppliers+0x550/0x550
 usb_new_device.cold+0x463/0xf66
 ? hub_disconnect+0x400/0x400
 ? _raw_spin_unlock_irq+0x24/0x30
 hub_event+0x10d5/0x3330
 ? hub_port_debounce+0x280/0x280
 ? __lock_acquire+0x1671/0x5790
 ? wq_calc_node_cpumask+0x170/0x2a0
 ? 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+0x873/0x13e0
 ? lock_release+0x640/0x640
 ? pwq_dec_nr_in_flight+0x320/0x320
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x8b/0xd10
 ? __kthread_parkme+0xd9/0x1d0
 ? process_one_work+0x13e0/0x13e0
 kthread+0x379/0x450
 ? _raw_spin_unlock_irq+0x24/0x30
 ? set_kthread_struct+0x100/0x100
 ret_from_fork+0x1f/0x30

Reported-by: Dokyung Song &lt;dokyungs@yonsei.ac.kr&gt;
Reported-by: Jisoo Jang &lt;jisoo.jang@yonsei.ac.kr&gt;
Reported-by: Minsuk Kang &lt;linuxlovemin@yonsei.ac.kr&gt;
Signed-off-by: Minsuk Kang &lt;linuxlovemin@yonsei.ac.kr&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/20221024071329.504277-1-linuxlovemin@yonsei.ac.kr
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 81d17f6f3331f03c8eafdacea68ab773426c1e3c ]

This patch fixes a shift-out-of-bounds in brcmfmac that occurs in
BIT(chiprev) when a 'chiprev' provided by the device is too large.
It should also not be equal to or greater than BITS_PER_TYPE(u32)
as we do bitwise AND with a u32 variable and BIT(chiprev). The patch
adds a check that makes the function return NULL if that is the case.
Note that the NULL case is later handled by the bus-specific caller,
brcmf_usb_probe_cb() or brcmf_usb_reset_resume(), for example.

Found by a modified version of syzkaller.

UBSAN: shift-out-of-bounds in drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
shift exponent 151055786 is too large for 64-bit type 'long unsigned int'
CPU: 0 PID: 1885 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132
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+0x57/0x7d
 ubsan_epilogue+0x5/0x40
 __ubsan_handle_shift_out_of_bounds.cold+0x53/0xdb
 ? lock_chain_count+0x20/0x20
 brcmf_fw_alloc_request.cold+0x19/0x3ea
 ? brcmf_fw_get_firmwares+0x250/0x250
 ? brcmf_usb_ioctl_resp_wait+0x1a7/0x1f0
 brcmf_usb_get_fwname+0x114/0x1a0
 ? brcmf_usb_reset_resume+0x120/0x120
 ? number+0x6c4/0x9a0
 brcmf_c_process_clm_blob+0x168/0x590
 ? put_dec+0x90/0x90
 ? enable_ptr_key_workfn+0x20/0x20
 ? brcmf_common_pd_remove+0x50/0x50
 ? rcu_read_lock_sched_held+0xa1/0xd0
 brcmf_c_preinit_dcmds+0x673/0xc40
 ? brcmf_c_set_joinpref_default+0x100/0x100
 ? rcu_read_lock_sched_held+0xa1/0xd0
 ? rcu_read_lock_bh_held+0xb0/0xb0
 ? lock_acquire+0x19d/0x4e0
 ? find_held_lock+0x2d/0x110
 ? brcmf_usb_deq+0x1cc/0x260
 ? mark_held_locks+0x9f/0xe0
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 ? _raw_spin_unlock_irqrestore+0x47/0x50
 ? trace_hardirqs_on+0x1c/0x120
 ? brcmf_usb_deq+0x1a7/0x260
 ? brcmf_usb_rx_fill_all+0x5a/0xf0
 brcmf_attach+0x246/0xd40
 ? wiphy_new_nm+0x1476/0x1d50
 ? kmemdup+0x30/0x40
 brcmf_usb_probe+0x12de/0x1690
 ? brcmf_usbdev_qinit.constprop.0+0x470/0x470
 usb_probe_interface+0x25f/0x710
 really_probe+0x1be/0xa90
 __driver_probe_device+0x2ab/0x460
 ? usb_match_id.part.0+0x88/0xc0
 driver_probe_device+0x49/0x120
 __device_attach_driver+0x18a/0x250
 ? driver_allows_async_probing+0x120/0x120
 bus_for_each_drv+0x123/0x1a0
 ? bus_rescan_devices+0x20/0x20
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 ? trace_hardirqs_on+0x1c/0x120
 __device_attach+0x207/0x330
 ? device_bind_driver+0xb0/0xb0
 ? kobject_uevent_env+0x230/0x12c0
 bus_probe_device+0x1a2/0x260
 device_add+0xa61/0x1ce0
 ? __mutex_unlock_slowpath+0xe7/0x660
 ? __fw_devlink_link_to_suppliers+0x550/0x550
 usb_set_configuration+0x984/0x1770
 ? kernfs_create_link+0x175/0x230
 usb_generic_driver_probe+0x69/0x90
 usb_probe_device+0x9c/0x220
 really_probe+0x1be/0xa90
 __driver_probe_device+0x2ab/0x460
 driver_probe_device+0x49/0x120
 __device_attach_driver+0x18a/0x250
 ? driver_allows_async_probing+0x120/0x120
 bus_for_each_drv+0x123/0x1a0
 ? bus_rescan_devices+0x20/0x20
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 ? trace_hardirqs_on+0x1c/0x120
 __device_attach+0x207/0x330
 ? device_bind_driver+0xb0/0xb0
 ? kobject_uevent_env+0x230/0x12c0
 bus_probe_device+0x1a2/0x260
 device_add+0xa61/0x1ce0
 ? __fw_devlink_link_to_suppliers+0x550/0x550
 usb_new_device.cold+0x463/0xf66
 ? hub_disconnect+0x400/0x400
 ? _raw_spin_unlock_irq+0x24/0x30
 hub_event+0x10d5/0x3330
 ? hub_port_debounce+0x280/0x280
 ? __lock_acquire+0x1671/0x5790
 ? wq_calc_node_cpumask+0x170/0x2a0
 ? 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+0x873/0x13e0
 ? lock_release+0x640/0x640
 ? pwq_dec_nr_in_flight+0x320/0x320
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x8b/0xd10
 ? __kthread_parkme+0xd9/0x1d0
 ? process_one_work+0x13e0/0x13e0
 kthread+0x379/0x450
 ? _raw_spin_unlock_irq+0x24/0x30
 ? set_kthread_struct+0x100/0x100
 ret_from_fork+0x1f/0x30

Reported-by: Dokyung Song &lt;dokyungs@yonsei.ac.kr&gt;
Reported-by: Jisoo Jang &lt;jisoo.jang@yonsei.ac.kr&gt;
Reported-by: Minsuk Kang &lt;linuxlovemin@yonsei.ac.kr&gt;
Signed-off-by: Minsuk Kang &lt;linuxlovemin@yonsei.ac.kr&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/20221024071329.504277-1-linuxlovemin@yonsei.ac.kr
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out</title>
<updated>2023-01-07T11:07:31+00:00</updated>
<author>
<name>Shigeru Yoshida</name>
<email>syoshida@redhat.com</email>
</author>
<published>2022-10-09T18:32:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c9ba3fbf6a488da6cad1d304c5234bd8d729eba3'/>
<id>c9ba3fbf6a488da6cad1d304c5234bd8d729eba3</id>
<content type='text'>
[ Upstream commit b6702a942a069c2a975478d719e98d83cdae1797 ]

syzkaller reported use-after-free with the stack trace like below [1]:

[   38.960489][    C3] ==================================================================
[   38.963216][    C3] BUG: KASAN: use-after-free in ar5523_cmd_tx_cb+0x220/0x240
[   38.964950][    C3] Read of size 8 at addr ffff888048e03450 by task swapper/3/0
[   38.966363][    C3]
[   38.967053][    C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.0.0-09039-ga6afa4199d3d-dirty #18
[   38.968464][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014
[   38.969959][    C3] Call Trace:
[   38.970841][    C3]  &lt;IRQ&gt;
[   38.971663][    C3]  dump_stack_lvl+0xfc/0x174
[   38.972620][    C3]  print_report.cold+0x2c3/0x752
[   38.973626][    C3]  ? ar5523_cmd_tx_cb+0x220/0x240
[   38.974644][    C3]  kasan_report+0xb1/0x1d0
[   38.975720][    C3]  ? ar5523_cmd_tx_cb+0x220/0x240
[   38.976831][    C3]  ar5523_cmd_tx_cb+0x220/0x240
[   38.978412][    C3]  __usb_hcd_giveback_urb+0x353/0x5b0
[   38.979755][    C3]  usb_hcd_giveback_urb+0x385/0x430
[   38.981266][    C3]  dummy_timer+0x140c/0x34e0
[   38.982925][    C3]  ? notifier_call_chain+0xb5/0x1e0
[   38.984761][    C3]  ? rcu_read_lock_sched_held+0xb/0x60
[   38.986242][    C3]  ? lock_release+0x51c/0x790
[   38.987323][    C3]  ? _raw_read_unlock_irqrestore+0x37/0x70
[   38.988483][    C3]  ? __wake_up_common_lock+0xde/0x130
[   38.989621][    C3]  ? reacquire_held_locks+0x4a0/0x4a0
[   38.990777][    C3]  ? lock_acquire+0x472/0x550
[   38.991919][    C3]  ? rcu_read_lock_sched_held+0xb/0x60
[   38.993138][    C3]  ? lock_acquire+0x472/0x550
[   38.994890][    C3]  ? dummy_urb_enqueue+0x860/0x860
[   38.996266][    C3]  ? do_raw_spin_unlock+0x16f/0x230
[   38.997670][    C3]  ? dummy_urb_enqueue+0x860/0x860
[   38.999116][    C3]  call_timer_fn+0x1a0/0x6a0
[   39.000668][    C3]  ? add_timer_on+0x4a0/0x4a0
[   39.002137][    C3]  ? reacquire_held_locks+0x4a0/0x4a0
[   39.003809][    C3]  ? __next_timer_interrupt+0x226/0x2a0
[   39.005509][    C3]  __run_timers.part.0+0x69a/0xac0
[   39.007025][    C3]  ? dummy_urb_enqueue+0x860/0x860
[   39.008716][    C3]  ? call_timer_fn+0x6a0/0x6a0
[   39.010254][    C3]  ? cpuacct_percpu_seq_show+0x10/0x10
[   39.011795][    C3]  ? kvm_sched_clock_read+0x14/0x40
[   39.013277][    C3]  ? sched_clock_cpu+0x69/0x2b0
[   39.014724][    C3]  run_timer_softirq+0xb6/0x1d0
[   39.016196][    C3]  __do_softirq+0x1d2/0x9be
[   39.017616][    C3]  __irq_exit_rcu+0xeb/0x190
[   39.019004][    C3]  irq_exit_rcu+0x5/0x20
[   39.020361][    C3]  sysvec_apic_timer_interrupt+0x8f/0xb0
[   39.021965][    C3]  &lt;/IRQ&gt;
[   39.023237][    C3]  &lt;TASK&gt;

In ar5523_probe(), ar5523_host_available() calls ar5523_cmd() as below
(there are other functions which finally call ar5523_cmd()):

ar5523_probe()
-&gt; ar5523_host_available()
   -&gt; ar5523_cmd_read()
      -&gt; ar5523_cmd()

If ar5523_cmd() timed out, then ar5523_host_available() failed and
ar5523_probe() freed the device structure.  So, ar5523_cmd_tx_cb()
might touch the freed structure.

This patch fixes this issue by canceling in-flight tx cmd if submitted
urb timed out.

Link: https://syzkaller.appspot.com/bug?id=9e12b2d54300842b71bdd18b54971385ff0d0d3a [1]
Reported-by: syzbot+95001b1fd6dfcc716c29@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida &lt;syoshida@redhat.com&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221009183223.420015-1-syoshida@redhat.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit b6702a942a069c2a975478d719e98d83cdae1797 ]

syzkaller reported use-after-free with the stack trace like below [1]:

[   38.960489][    C3] ==================================================================
[   38.963216][    C3] BUG: KASAN: use-after-free in ar5523_cmd_tx_cb+0x220/0x240
[   38.964950][    C3] Read of size 8 at addr ffff888048e03450 by task swapper/3/0
[   38.966363][    C3]
[   38.967053][    C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.0.0-09039-ga6afa4199d3d-dirty #18
[   38.968464][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014
[   38.969959][    C3] Call Trace:
[   38.970841][    C3]  &lt;IRQ&gt;
[   38.971663][    C3]  dump_stack_lvl+0xfc/0x174
[   38.972620][    C3]  print_report.cold+0x2c3/0x752
[   38.973626][    C3]  ? ar5523_cmd_tx_cb+0x220/0x240
[   38.974644][    C3]  kasan_report+0xb1/0x1d0
[   38.975720][    C3]  ? ar5523_cmd_tx_cb+0x220/0x240
[   38.976831][    C3]  ar5523_cmd_tx_cb+0x220/0x240
[   38.978412][    C3]  __usb_hcd_giveback_urb+0x353/0x5b0
[   38.979755][    C3]  usb_hcd_giveback_urb+0x385/0x430
[   38.981266][    C3]  dummy_timer+0x140c/0x34e0
[   38.982925][    C3]  ? notifier_call_chain+0xb5/0x1e0
[   38.984761][    C3]  ? rcu_read_lock_sched_held+0xb/0x60
[   38.986242][    C3]  ? lock_release+0x51c/0x790
[   38.987323][    C3]  ? _raw_read_unlock_irqrestore+0x37/0x70
[   38.988483][    C3]  ? __wake_up_common_lock+0xde/0x130
[   38.989621][    C3]  ? reacquire_held_locks+0x4a0/0x4a0
[   38.990777][    C3]  ? lock_acquire+0x472/0x550
[   38.991919][    C3]  ? rcu_read_lock_sched_held+0xb/0x60
[   38.993138][    C3]  ? lock_acquire+0x472/0x550
[   38.994890][    C3]  ? dummy_urb_enqueue+0x860/0x860
[   38.996266][    C3]  ? do_raw_spin_unlock+0x16f/0x230
[   38.997670][    C3]  ? dummy_urb_enqueue+0x860/0x860
[   38.999116][    C3]  call_timer_fn+0x1a0/0x6a0
[   39.000668][    C3]  ? add_timer_on+0x4a0/0x4a0
[   39.002137][    C3]  ? reacquire_held_locks+0x4a0/0x4a0
[   39.003809][    C3]  ? __next_timer_interrupt+0x226/0x2a0
[   39.005509][    C3]  __run_timers.part.0+0x69a/0xac0
[   39.007025][    C3]  ? dummy_urb_enqueue+0x860/0x860
[   39.008716][    C3]  ? call_timer_fn+0x6a0/0x6a0
[   39.010254][    C3]  ? cpuacct_percpu_seq_show+0x10/0x10
[   39.011795][    C3]  ? kvm_sched_clock_read+0x14/0x40
[   39.013277][    C3]  ? sched_clock_cpu+0x69/0x2b0
[   39.014724][    C3]  run_timer_softirq+0xb6/0x1d0
[   39.016196][    C3]  __do_softirq+0x1d2/0x9be
[   39.017616][    C3]  __irq_exit_rcu+0xeb/0x190
[   39.019004][    C3]  irq_exit_rcu+0x5/0x20
[   39.020361][    C3]  sysvec_apic_timer_interrupt+0x8f/0xb0
[   39.021965][    C3]  &lt;/IRQ&gt;
[   39.023237][    C3]  &lt;TASK&gt;

In ar5523_probe(), ar5523_host_available() calls ar5523_cmd() as below
(there are other functions which finally call ar5523_cmd()):

ar5523_probe()
-&gt; ar5523_host_available()
   -&gt; ar5523_cmd_read()
      -&gt; ar5523_cmd()

If ar5523_cmd() timed out, then ar5523_host_available() failed and
ar5523_probe() freed the device structure.  So, ar5523_cmd_tx_cb()
might touch the freed structure.

This patch fixes this issue by canceling in-flight tx cmd if submitted
urb timed out.

Link: https://syzkaller.appspot.com/bug?id=9e12b2d54300842b71bdd18b54971385ff0d0d3a [1]
Reported-by: syzbot+95001b1fd6dfcc716c29@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida &lt;syoshida@redhat.com&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221009183223.420015-1-syoshida@redhat.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: ath9k: verify the expected usb_endpoints are present</title>
<updated>2023-01-07T11:07:31+00:00</updated>
<author>
<name>Fedor Pchelkin</name>
<email>pchelkin@ispras.ru</email>
</author>
<published>2022-10-08T21:15:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=932f0a5e829fb0b823f96d7fa9a0f4fc96660b77'/>
<id>932f0a5e829fb0b823f96d7fa9a0f4fc96660b77</id>
<content type='text'>
[ Upstream commit 16ef02bad239f11f322df8425d302be62f0443ce ]

The bug arises when a USB device claims to be an ATH9K but doesn't
have the expected endpoints. (In this case there was an interrupt
endpoint where the driver expected a bulk endpoint.) The kernel
needs to be able to handle such devices without getting an internal error.

usb 1-1: BOGUS urb xfer, pipe 3 != type 1
WARNING: CPU: 3 PID: 500 at drivers/usb/core/urb.c:493 usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
Modules linked in:
CPU: 3 PID: 500 Comm: kworker/3:2 Not tainted 5.10.135-syzkaller #0
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: events request_firmware_work_func
RIP: 0010:usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
Call Trace:
 ath9k_hif_usb_alloc_rx_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:908 [inline]
 ath9k_hif_usb_alloc_urbs+0x75e/0x1010 drivers/net/wireless/ath/ath9k/hif_usb.c:1019
 ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1109 [inline]
 ath9k_hif_usb_firmware_cb+0x142/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1242
 request_firmware_work_func+0x12e/0x240 drivers/base/firmware_loader/main.c:1097
 process_one_work+0x9af/0x1600 kernel/workqueue.c:2279
 worker_thread+0x61d/0x12f0 kernel/workqueue.c:2425
 kthread+0x3b4/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Suggested-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Signed-off-by: Alexey Khoroshilov &lt;khoroshilov@ispras.ru&gt;
Acked-by: Toke Høiland-Jørgensen &lt;toke@toke.dk&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221008211532.74583-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 16ef02bad239f11f322df8425d302be62f0443ce ]

The bug arises when a USB device claims to be an ATH9K but doesn't
have the expected endpoints. (In this case there was an interrupt
endpoint where the driver expected a bulk endpoint.) The kernel
needs to be able to handle such devices without getting an internal error.

usb 1-1: BOGUS urb xfer, pipe 3 != type 1
WARNING: CPU: 3 PID: 500 at drivers/usb/core/urb.c:493 usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
Modules linked in:
CPU: 3 PID: 500 Comm: kworker/3:2 Not tainted 5.10.135-syzkaller #0
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: events request_firmware_work_func
RIP: 0010:usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
Call Trace:
 ath9k_hif_usb_alloc_rx_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:908 [inline]
 ath9k_hif_usb_alloc_urbs+0x75e/0x1010 drivers/net/wireless/ath/ath9k/hif_usb.c:1019
 ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1109 [inline]
 ath9k_hif_usb_firmware_cb+0x142/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1242
 request_firmware_work_func+0x12e/0x240 drivers/base/firmware_loader/main.c:1097
 process_one_work+0x9af/0x1600 kernel/workqueue.c:2279
 worker_thread+0x61d/0x12f0 kernel/workqueue.c:2425
 kthread+0x3b4/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Suggested-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Signed-off-by: Alexey Khoroshilov &lt;khoroshilov@ispras.ru&gt;
Acked-by: Toke Høiland-Jørgensen &lt;toke@toke.dk&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221008211532.74583-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: brcmfmac: Fix error return code in brcmf_sdio_download_firmware()</title>
<updated>2023-01-07T11:07:20+00:00</updated>
<author>
<name>Wang Yufen</name>
<email>wangyufen@huawei.com</email>
</author>
<published>2022-12-02T05:35:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=56758e923d087d14921c2e30af564860a3400981'/>
<id>56758e923d087d14921c2e30af564860a3400981</id>
<content type='text'>
[ Upstream commit c2f2924bc7f9ea75ef8d95863e710168f8196256 ]

Fix to return a negative error code instead of 0 when
brcmf_chip_set_active() fails. In addition, change the return
value for brcmf_pcie_exit_download_state() to keep consistent.

Fixes: d380ebc9b6fb ("brcmfmac: rename chip download functions")
Signed-off-by: Wang Yufen &lt;wangyufen@huawei.com&gt;
Reviewed-by: Arend van Spriel &lt;arend.vanspriel@broadcom.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/1669959342-27144-1-git-send-email-wangyufen@huawei.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit c2f2924bc7f9ea75ef8d95863e710168f8196256 ]

Fix to return a negative error code instead of 0 when
brcmf_chip_set_active() fails. In addition, change the return
value for brcmf_pcie_exit_download_state() to keep consistent.

Fixes: d380ebc9b6fb ("brcmfmac: rename chip download functions")
Signed-off-by: Wang Yufen &lt;wangyufen@huawei.com&gt;
Reviewed-by: Arend van Spriel &lt;arend.vanspriel@broadcom.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/1669959342-27144-1-git-send-email-wangyufen@huawei.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: rtl8xxxu: Add __packed to struct rtl8723bu_c2h</title>
<updated>2023-01-07T11:07:20+00:00</updated>
<author>
<name>Bitterblue Smith</name>
<email>rtl8821cerfe2@gmail.com</email>
</author>
<published>2022-12-01T14:13:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5a55f0336cbbab0779b5e94557d1fc40c145c701'/>
<id>5a55f0336cbbab0779b5e94557d1fc40c145c701</id>
<content type='text'>
[ Upstream commit dd469a754afdb782ba3033cee102147493dc39f4 ]

This struct is used to access a sequence of bytes received from the
wifi chip. It must not have any padding bytes between the members.

This doesn't change anything on my system, possibly because currently
none of the members need more than byte alignment.

Fixes: b2b43b7837ba ("rtl8xxxu: Initial functionality to handle C2H events for 8723bu")
Signed-off-by: Bitterblue Smith &lt;rtl8821cerfe2@gmail.com&gt;
Reviewed-by: Ping-Ke Shih &lt;pkshih@realtek.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/1a270918-da22-ff5f-29fc-7855f740c5ba@gmail.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit dd469a754afdb782ba3033cee102147493dc39f4 ]

This struct is used to access a sequence of bytes received from the
wifi chip. It must not have any padding bytes between the members.

This doesn't change anything on my system, possibly because currently
none of the members need more than byte alignment.

Fixes: b2b43b7837ba ("rtl8xxxu: Initial functionality to handle C2H events for 8723bu")
Signed-off-by: Bitterblue Smith &lt;rtl8821cerfe2@gmail.com&gt;
Reviewed-by: Ping-Ke Shih &lt;pkshih@realtek.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/1a270918-da22-ff5f-29fc-7855f740c5ba@gmail.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: ath10k: Fix return value in ath10k_pci_init()</title>
<updated>2023-01-07T11:07:16+00:00</updated>
<author>
<name>Xiu Jianfeng</name>
<email>xiujianfeng@huawei.com</email>
</author>
<published>2022-11-10T06:19:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a4505bb429a0bb9bec26c97552a4f78b0980f5fe'/>
<id>a4505bb429a0bb9bec26c97552a4f78b0980f5fe</id>
<content type='text'>
[ Upstream commit 2af7749047d8d6ad43feff69f555a13a6a6c2831 ]

This driver is attempting to register to support two different buses.
if either of these is successful then ath10k_pci_init() should return 0
so that hardware attached to the successful bus can be probed and
supported. only if both of these are unsuccessful should ath10k_pci_init()
return an errno.

Fixes: 0b523ced9a3c ("ath10k: add basic skeleton to support ahb")
Signed-off-by: Xiu Jianfeng &lt;xiujianfeng@huawei.com&gt;
Reviewed-by: Jeff Johnson &lt;quic_jjohnson@quicinc.com&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221110061926.18163-1-xiujianfeng@huawei.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 2af7749047d8d6ad43feff69f555a13a6a6c2831 ]

This driver is attempting to register to support two different buses.
if either of these is successful then ath10k_pci_init() should return 0
so that hardware attached to the successful bus can be probed and
supported. only if both of these are unsuccessful should ath10k_pci_init()
return an errno.

Fixes: 0b523ced9a3c ("ath10k: add basic skeleton to support ahb")
Signed-off-by: Xiu Jianfeng &lt;xiujianfeng@huawei.com&gt;
Reviewed-by: Jeff Johnson &lt;quic_jjohnson@quicinc.com&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221110061926.18163-1-xiujianfeng@huawei.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()</title>
<updated>2023-01-07T11:07:16+00:00</updated>
<author>
<name>Fedor Pchelkin</name>
<email>pchelkin@ispras.ru</email>
</author>
<published>2022-10-08T11:49:17+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5e8751a977a49a6e00cce1a8da5ca16da83f9c8c'/>
<id>5e8751a977a49a6e00cce1a8da5ca16da83f9c8c</id>
<content type='text'>
[ Upstream commit dd95f2239fc846795fc926787c3ae0ca701c9840 ]

It is possible that skb is freed in ath9k_htc_rx_msg(), then
usb_submit_urb() fails and we try to free skb again. It causes
use-after-free bug. Moreover, if alloc_skb() fails, urb-&gt;context becomes
NULL but rx_buf is not freed and there can be a memory leak.

The patch removes unnecessary nskb and makes skb processing more clear: it
is supposed that ath9k_htc_rx_msg() either frees old skb or passes its
managing to another callback function.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 3deff76095c4 ("ath9k_htc: Increase URB count for REG_IN pipe")
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Signed-off-by: Alexey Khoroshilov &lt;khoroshilov@ispras.ru&gt;
Acked-by: Toke Høiland-Jørgensen &lt;toke@toke.dk&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221008114917.21404-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit dd95f2239fc846795fc926787c3ae0ca701c9840 ]

It is possible that skb is freed in ath9k_htc_rx_msg(), then
usb_submit_urb() fails and we try to free skb again. It causes
use-after-free bug. Moreover, if alloc_skb() fails, urb-&gt;context becomes
NULL but rx_buf is not freed and there can be a memory leak.

The patch removes unnecessary nskb and makes skb processing more clear: it
is supposed that ath9k_htc_rx_msg() either frees old skb or passes its
managing to another callback function.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 3deff76095c4 ("ath9k_htc: Increase URB count for REG_IN pipe")
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Signed-off-by: Alexey Khoroshilov &lt;khoroshilov@ispras.ru&gt;
Acked-by: Toke Høiland-Jørgensen &lt;toke@toke.dk&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20221008114917.21404-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()</title>
<updated>2023-01-07T11:07:15+00:00</updated>
<author>
<name>Fedor Pchelkin</name>
<email>pchelkin@ispras.ru</email>
</author>
<published>2022-07-25T15:13:59+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=134ae5eba41294eff76e4be20d6001b8f0192207'/>
<id>134ae5eba41294eff76e4be20d6001b8f0192207</id>
<content type='text'>
[ Upstream commit c2a94de38c74e86f49124ac14f093d6a5c377a90 ]

Syzkaller reports a long-known leak of urbs in
ath9k_hif_usb_dealloc_tx_urbs().

The cause of the leak is that usb_get_urb() is called but usb_free_urb()
(or usb_put_urb()) is not called inside usb_kill_urb() as urb-&gt;dev or
urb-&gt;ep fields have not been initialized and usb_kill_urb() returns
immediately.

The patch removes trying to kill urbs located in hif_dev-&gt;tx.tx_buf
because hif_dev-&gt;tx.tx_buf is not supposed to contain urbs which are in
pending state (the pending urbs are stored in hif_dev-&gt;tx.tx_pending).
The tx.tx_lock is acquired so there should not be any changes in the list.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 03fb92a432ea ("ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()")
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Signed-off-by: Alexey Khoroshilov &lt;khoroshilov@ispras.ru&gt;
Acked-by: Toke Høiland-Jørgensen &lt;toke@toke.dk&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20220725151359.283704-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit c2a94de38c74e86f49124ac14f093d6a5c377a90 ]

Syzkaller reports a long-known leak of urbs in
ath9k_hif_usb_dealloc_tx_urbs().

The cause of the leak is that usb_get_urb() is called but usb_free_urb()
(or usb_put_urb()) is not called inside usb_kill_urb() as urb-&gt;dev or
urb-&gt;ep fields have not been initialized and usb_kill_urb() returns
immediately.

The patch removes trying to kill urbs located in hif_dev-&gt;tx.tx_buf
because hif_dev-&gt;tx.tx_buf is not supposed to contain urbs which are in
pending state (the pending urbs are stored in hif_dev-&gt;tx.tx_pending).
The tx.tx_lock is acquired so there should not be any changes in the list.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 03fb92a432ea ("ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()")
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Signed-off-by: Alexey Khoroshilov &lt;khoroshilov@ispras.ru&gt;
Acked-by: Toke Høiland-Jørgensen &lt;toke@toke.dk&gt;
Signed-off-by: Kalle Valo &lt;quic_kvalo@quicinc.com&gt;
Link: https://lore.kernel.org/r/20220725151359.283704-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: mac80211_hwsim: fix debugfs attribute ps with rc table support</title>
<updated>2022-12-08T10:15:39+00:00</updated>
<author>
<name>Jonas Jelonek</name>
<email>jelonek.jonas@gmail.com</email>
</author>
<published>2022-10-14T14:54:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1273604f3f739447e7bbd1730d814a541625faba'/>
<id>1273604f3f739447e7bbd1730d814a541625faba</id>
<content type='text'>
[ Upstream commit 69188df5f6e4cecc6b76b958979ba363cd5240e8 ]

Fixes a warning that occurs when rc table support is enabled
(IEEE80211_HW_SUPPORTS_RC_TABLE) in mac80211_hwsim and the PS mode
is changed via the exported debugfs attribute.

When the PS mode is changed, a packet is broadcasted via
hwsim_send_nullfunc by creating and transmitting a plain skb with only
header initialized. The ieee80211 rate array in the control buffer is
zero-initialized. When ratetbl support is enabled, ieee80211_get_tx_rates
is called for the skb with sta parameter set to NULL and thus no
ratetbl can be used. The final rate array then looks like
[-1,0; 0,0; 0,0; 0,0] which causes the warning in ieee80211_get_tx_rate.

The issue is fixed by setting the count of the first rate with idx '0'
to 1 and hence ieee80211_get_tx_rates won't overwrite it with idx '-1'.

Signed-off-by: Jonas Jelonek &lt;jelonek.jonas@gmail.com&gt;
Signed-off-by: Johannes Berg &lt;johannes.berg@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 69188df5f6e4cecc6b76b958979ba363cd5240e8 ]

Fixes a warning that occurs when rc table support is enabled
(IEEE80211_HW_SUPPORTS_RC_TABLE) in mac80211_hwsim and the PS mode
is changed via the exported debugfs attribute.

When the PS mode is changed, a packet is broadcasted via
hwsim_send_nullfunc by creating and transmitting a plain skb with only
header initialized. The ieee80211 rate array in the control buffer is
zero-initialized. When ratetbl support is enabled, ieee80211_get_tx_rates
is called for the skb with sta parameter set to NULL and thus no
ratetbl can be used. The final rate array then looks like
[-1,0; 0,0; 0,0; 0,0] which causes the warning in ieee80211_get_tx_rate.

The issue is fixed by setting the count of the first rate with idx '0'
to 1 and hence ieee80211_get_tx_rates won't overwrite it with idx '-1'.

Signed-off-by: Jonas Jelonek &lt;jelonek.jonas@gmail.com&gt;
Signed-off-by: Johannes Berg &lt;johannes.berg@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>wifi: brcmfmac: Fix potential buffer overflow in brcmf_fweh_event_worker()</title>
<updated>2022-11-10T14:46:08+00:00</updated>
<author>
<name>Dokyung Song</name>
<email>dokyung.song@gmail.com</email>
</author>
<published>2022-10-21T06:13:59+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b1477d95e967bf626b8c5e3838bb885c47381b24'/>
<id>b1477d95e967bf626b8c5e3838bb885c47381b24</id>
<content type='text'>
commit 6788ba8aed4e28e90f72d68a9d794e34eac17295 upstream.

This patch fixes an intra-object buffer overflow in brcmfmac that occurs
when the device provides a 'bsscfgidx' equal to or greater than the
buffer size. The patch adds a check that leads to a safe failure if that
is the case.

This fixes CVE-2022-3628.

UBSAN: array-index-out-of-bounds in drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
index 52 is out of range for type 'brcmf_if *[16]'
CPU: 0 PID: 1898 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
Workqueue: events brcmf_fweh_event_worker
Call Trace:
 dump_stack_lvl+0x57/0x7d
 ubsan_epilogue+0x5/0x40
 __ubsan_handle_out_of_bounds+0x69/0x80
 ? memcpy+0x39/0x60
 brcmf_fweh_event_worker+0xae1/0xc00
 ? brcmf_fweh_call_event_handler.isra.0+0x100/0x100
 ? rcu_read_lock_sched_held+0xa1/0xd0
 ? rcu_read_lock_bh_held+0xb0/0xb0
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 process_one_work+0x873/0x13e0
 ? lock_release+0x640/0x640
 ? pwq_dec_nr_in_flight+0x320/0x320
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x8b/0xd10
 ? __kthread_parkme+0xd9/0x1d0
 ? process_one_work+0x13e0/0x13e0
 kthread+0x379/0x450
 ? _raw_spin_unlock_irq+0x24/0x30
 ? set_kthread_struct+0x100/0x100
 ret_from_fork+0x1f/0x30
================================================================================
general protection fault, probably for non-canonical address 0xe5601c0020023fff: 0000 [#1] SMP KASAN
KASAN: maybe wild-memory-access in range [0x2b0100010011fff8-0x2b0100010011ffff]
CPU: 0 PID: 1898 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
Workqueue: events brcmf_fweh_event_worker
RIP: 0010:brcmf_fweh_call_event_handler.isra.0+0x42/0x100
Code: 89 f5 53 48 89 fb 48 83 ec 08 e8 79 0b 38 fe 48 85 ed 74 7e e8 6f 0b 38 fe 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 8b 00 00 00 4c 8b 7d 00 44 89 e0 48 ba 00 00 00
RSP: 0018:ffffc9000259fbd8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff888115d8cd50 RCX: 0000000000000000
RDX: 0560200020023fff RSI: ffffffff8304bc91 RDI: ffff888115d8cd50
RBP: 2b0100010011ffff R08: ffff888112340050 R09: ffffed1023549809
R10: ffff88811aa4c047 R11: ffffed1023549808 R12: 0000000000000045
R13: ffffc9000259fca0 R14: ffff888112340050 R15: ffff888112340000
FS:  0000000000000000(0000) GS:ffff88811aa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000004053ccc0 CR3: 0000000112740000 CR4: 0000000000750ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 brcmf_fweh_event_worker+0x117/0xc00
 ? brcmf_fweh_call_event_handler.isra.0+0x100/0x100
 ? rcu_read_lock_sched_held+0xa1/0xd0
 ? rcu_read_lock_bh_held+0xb0/0xb0
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 process_one_work+0x873/0x13e0
 ? lock_release+0x640/0x640
 ? pwq_dec_nr_in_flight+0x320/0x320
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x8b/0xd10
 ? __kthread_parkme+0xd9/0x1d0
 ? process_one_work+0x13e0/0x13e0
 kthread+0x379/0x450
 ? _raw_spin_unlock_irq+0x24/0x30
 ? set_kthread_struct+0x100/0x100
 ret_from_fork+0x1f/0x30
Modules linked in: 88XXau(O) 88x2bu(O)
---[ end trace 41d302138f3ff55a ]---
RIP: 0010:brcmf_fweh_call_event_handler.isra.0+0x42/0x100
Code: 89 f5 53 48 89 fb 48 83 ec 08 e8 79 0b 38 fe 48 85 ed 74 7e e8 6f 0b 38 fe 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 8b 00 00 00 4c 8b 7d 00 44 89 e0 48 ba 00 00 00
RSP: 0018:ffffc9000259fbd8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff888115d8cd50 RCX: 0000000000000000
RDX: 0560200020023fff RSI: ffffffff8304bc91 RDI: ffff888115d8cd50
RBP: 2b0100010011ffff R08: ffff888112340050 R09: ffffed1023549809
R10: ffff88811aa4c047 R11: ffffed1023549808 R12: 0000000000000045
R13: ffffc9000259fca0 R14: ffff888112340050 R15: ffff888112340000
FS:  0000000000000000(0000) GS:ffff88811aa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000004053ccc0 CR3: 0000000112740000 CR4: 0000000000750ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Kernel panic - not syncing: Fatal exception

Reported-by: Dokyung Song &lt;dokyungs@yonsei.ac.kr&gt;
Reported-by: Jisoo Jang &lt;jisoo.jang@yonsei.ac.kr&gt;
Reported-by: Minsuk Kang &lt;linuxlovemin@yonsei.ac.kr&gt;
Reviewed-by: Arend van Spriel &lt;aspriel@gmail.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Dokyung Song &lt;dokyung.song@gmail.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/20221021061359.GA550858@laguna
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 6788ba8aed4e28e90f72d68a9d794e34eac17295 upstream.

This patch fixes an intra-object buffer overflow in brcmfmac that occurs
when the device provides a 'bsscfgidx' equal to or greater than the
buffer size. The patch adds a check that leads to a safe failure if that
is the case.

This fixes CVE-2022-3628.

UBSAN: array-index-out-of-bounds in drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
index 52 is out of range for type 'brcmf_if *[16]'
CPU: 0 PID: 1898 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
Workqueue: events brcmf_fweh_event_worker
Call Trace:
 dump_stack_lvl+0x57/0x7d
 ubsan_epilogue+0x5/0x40
 __ubsan_handle_out_of_bounds+0x69/0x80
 ? memcpy+0x39/0x60
 brcmf_fweh_event_worker+0xae1/0xc00
 ? brcmf_fweh_call_event_handler.isra.0+0x100/0x100
 ? rcu_read_lock_sched_held+0xa1/0xd0
 ? rcu_read_lock_bh_held+0xb0/0xb0
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 process_one_work+0x873/0x13e0
 ? lock_release+0x640/0x640
 ? pwq_dec_nr_in_flight+0x320/0x320
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x8b/0xd10
 ? __kthread_parkme+0xd9/0x1d0
 ? process_one_work+0x13e0/0x13e0
 kthread+0x379/0x450
 ? _raw_spin_unlock_irq+0x24/0x30
 ? set_kthread_struct+0x100/0x100
 ret_from_fork+0x1f/0x30
================================================================================
general protection fault, probably for non-canonical address 0xe5601c0020023fff: 0000 [#1] SMP KASAN
KASAN: maybe wild-memory-access in range [0x2b0100010011fff8-0x2b0100010011ffff]
CPU: 0 PID: 1898 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
Workqueue: events brcmf_fweh_event_worker
RIP: 0010:brcmf_fweh_call_event_handler.isra.0+0x42/0x100
Code: 89 f5 53 48 89 fb 48 83 ec 08 e8 79 0b 38 fe 48 85 ed 74 7e e8 6f 0b 38 fe 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 8b 00 00 00 4c 8b 7d 00 44 89 e0 48 ba 00 00 00
RSP: 0018:ffffc9000259fbd8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff888115d8cd50 RCX: 0000000000000000
RDX: 0560200020023fff RSI: ffffffff8304bc91 RDI: ffff888115d8cd50
RBP: 2b0100010011ffff R08: ffff888112340050 R09: ffffed1023549809
R10: ffff88811aa4c047 R11: ffffed1023549808 R12: 0000000000000045
R13: ffffc9000259fca0 R14: ffff888112340050 R15: ffff888112340000
FS:  0000000000000000(0000) GS:ffff88811aa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000004053ccc0 CR3: 0000000112740000 CR4: 0000000000750ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 brcmf_fweh_event_worker+0x117/0xc00
 ? brcmf_fweh_call_event_handler.isra.0+0x100/0x100
 ? rcu_read_lock_sched_held+0xa1/0xd0
 ? rcu_read_lock_bh_held+0xb0/0xb0
 ? lockdep_hardirqs_on_prepare+0x273/0x3e0
 process_one_work+0x873/0x13e0
 ? lock_release+0x640/0x640
 ? pwq_dec_nr_in_flight+0x320/0x320
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x8b/0xd10
 ? __kthread_parkme+0xd9/0x1d0
 ? process_one_work+0x13e0/0x13e0
 kthread+0x379/0x450
 ? _raw_spin_unlock_irq+0x24/0x30
 ? set_kthread_struct+0x100/0x100
 ret_from_fork+0x1f/0x30
Modules linked in: 88XXau(O) 88x2bu(O)
---[ end trace 41d302138f3ff55a ]---
RIP: 0010:brcmf_fweh_call_event_handler.isra.0+0x42/0x100
Code: 89 f5 53 48 89 fb 48 83 ec 08 e8 79 0b 38 fe 48 85 ed 74 7e e8 6f 0b 38 fe 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 8b 00 00 00 4c 8b 7d 00 44 89 e0 48 ba 00 00 00
RSP: 0018:ffffc9000259fbd8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff888115d8cd50 RCX: 0000000000000000
RDX: 0560200020023fff RSI: ffffffff8304bc91 RDI: ffff888115d8cd50
RBP: 2b0100010011ffff R08: ffff888112340050 R09: ffffed1023549809
R10: ffff88811aa4c047 R11: ffffed1023549808 R12: 0000000000000045
R13: ffffc9000259fca0 R14: ffff888112340050 R15: ffff888112340000
FS:  0000000000000000(0000) GS:ffff88811aa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000004053ccc0 CR3: 0000000112740000 CR4: 0000000000750ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Kernel panic - not syncing: Fatal exception

Reported-by: Dokyung Song &lt;dokyungs@yonsei.ac.kr&gt;
Reported-by: Jisoo Jang &lt;jisoo.jang@yonsei.ac.kr&gt;
Reported-by: Minsuk Kang &lt;linuxlovemin@yonsei.ac.kr&gt;
Reviewed-by: Arend van Spriel &lt;aspriel@gmail.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Dokyung Song &lt;dokyung.song@gmail.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@kernel.org&gt;
Link: https://lore.kernel.org/r/20221021061359.GA550858@laguna
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
