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dd419a3f2ebc18cc00bc32c57fd052d7a188b78b
linux-stable-mirror/drivers/comedi/drivers
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Edward Adam Davis a3cfcd0c78 comedi: pcl726: Prevent invalid irq number 
commit 96cb948408 upstream.

The reproducer passed in an irq number(0x80008000) that was too large,
which triggered the oob.

Added an interrupt number check to prevent users from passing in an irq
number that was too large.

If `it->options[1]` is 31, then `1 << it->options[1]` is still invalid
because it shifts a 1-bit into the sign bit (which is UB in C).
Possible solutions include reducing the upper bound on the
`it->options[1]` value to 30 or lower, or using `1U << it->options[1]`.

The old code would just not attempt to request the IRQ if the
`options[1]` value were invalid.  And it would still configure the
device without interrupts even if the call to `request_irq` returned an
error.  So it would be better to combine this test with the test below.

Fixes: fff4620724 ("staging: comedi: pcl726: enable the interrupt support code")
Cc: stable <stable@kernel.org> # 5.13+
Reported-by: syzbot+5cd373521edd68bebcb3@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=5cd373521edd68bebcb3
Tested-by: syzbot+5cd373521edd68bebcb3@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/tencent_3C66983CC1369E962436264A50759176BF09@qq.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:31:09 +02:00
..
ni_routing
comedi: ni_routing: tools: Check when the file could not be opened
2024-09-11 16:03:28 +02:00
tests
…
8255_pci.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
8255.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
addi_apci_3xxx.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_16xx.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_1032.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_1500.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_1516.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_1564.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_2032.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_2200.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_3120.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_apci_3501.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_tcw.h
…
addi_watchdog.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
addi_watchdog.h
…
adl_pci7x3x.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adl_pci6208.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adl_pci8164.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adl_pci9111.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
adl_pci9118.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
adq12b.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adv_pci1710.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
adv_pci1720.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adv_pci1723.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adv_pci1724.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
adv_pci1760.c
comedi: adv_pci1760: Fix PWM instruction handling
2023-01-19 17:24:47 +01:00
adv_pci_dio.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
aio_aio12_8.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
aio_iiro_16.c
comedi: aio_iiro_16: Fix bit shift out of bounds
2025-07-24 08:56:28 +02:00
amcc_s5933.h
…
amplc_dio200_common.c
comedi: amplc_dio200_common: Conditionally remove I/O port support
2023-10-05 13:34:04 +02:00
amplc_dio200_pci.c
comedi: amplc_dio200_pci: Conditionally remove devices that use port I/O
2023-10-05 13:34:04 +02:00
amplc_dio200.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
amplc_dio200.h
…
amplc_pc236_common.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
amplc_pc236.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
amplc_pc236.h
…
amplc_pc263.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
amplc_pci224.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
amplc_pci230.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
amplc_pci236.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
amplc_pci263.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
c6xdigio.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
cb_das16_cs.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
cb_pcidas64.c
comedi: remove unused helper function dma_chain_flag_bits
2024-04-11 15:12:07 +02:00
cb_pcidas.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
cb_pcidda.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
cb_pcimdas.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
cb_pcimdda.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
comedi_8254.c
comedi: comedi_8254: Conditionally remove I/O port support
2023-10-05 13:34:04 +02:00
comedi_8255.c
comedi: comedi_8255: Correct error in subdevice initialization
2024-03-05 14:21:42 +00:00
comedi_bond.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
comedi_isadma.c
PCI: Move isa_dma_bridge_buggy out of asm/dma.h
2022-07-22 17:24:47 -05:00
comedi_parport.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
comedi_test.c
comedi: comedi_test: Fix possible deletion of uninitialized timers
2025-08-01 09:48:44 +01:00
contec_pci_dio.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dac02.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
daqboard2000.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
das08_cs.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
das08_isa.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
das08_pci.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
das08.c
comedi: remove redundant assignment to variable range
2024-02-18 19:17:11 +01:00
das08.h
…
das16.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
das16m1.c
comedi: das16m1: Fix bit shift out of bounds
2025-07-24 08:56:28 +02:00
das800.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
das1800.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
das6402.c
comedi: das6402: Fix bit shift out of bounds
2025-07-24 08:56:28 +02:00
dmm32at.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
dt282x.c
comedi: Move "comedi_isadma.h" to <linux/comedi/comedi_isadma.h>
2021-11-26 16:48:59 +01:00
dt2801.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dt2811.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dt2814.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dt2815.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dt2817.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dt3000.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dt9812.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
dyna_pci10xx.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
fl512.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
gsc_hpdi.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
icp_multi.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ii_pci20kc.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
jr3_pci.c
comedi: jr3_pci: Fix synchronous deletion of timer
2025-05-02 07:59:30 +02:00
jr3_pci.h
…
ke_counter.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
Makefile
…
me4000.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
me_daq.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
mf6x4.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
mite.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
mite.h
…
mpc624.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
multiq3.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_65xx.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_660x.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_670x.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_6527.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_at_a2150.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
ni_at_ao.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
ni_atmio16d.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
ni_atmio.c
comedi: ni_*: do not declare unused variable range_ni_E_ao_ext
2024-07-31 13:11:43 +02:00
ni_daq_700.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_daq_dio24.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
ni_labpc_common.c
comedi: ni_labpc_common: Conditionally remove I/O port support
2023-10-05 13:34:04 +02:00
ni_labpc_cs.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_labpc_isadma.c
comedi: Move "comedi_isadma.h" to <linux/comedi/comedi_isadma.h>
2021-11-26 16:48:59 +01:00
ni_labpc_isadma.h
…
ni_labpc_pci.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_labpc_regs.h
…
ni_labpc.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_labpc.h
…
ni_mio_common.c
comedi: ni_*: do not declare unused variable range_ni_E_ao_ext
2024-07-31 13:11:43 +02:00
ni_mio_cs.c
comedi: Move and rename "8255.h" to <linux/comedi/comedi_8255.h>
2021-11-26 16:48:59 +01:00
ni_pcidio.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_pcimio.c
comedi: ni_*: do not declare unused variable range_ni_E_ao_ext
2024-07-31 13:11:43 +02:00
ni_routes.c
comedi: drivers: ni_routes: Use strcmp() instead of memcmp()
2022-02-25 12:08:52 +01:00
ni_routes.h
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_stc.h
comedi: ni_*: do not declare unused variable range_ni_E_ao_ext
2024-07-31 13:11:43 +02:00
ni_tio_internal.h
…
ni_tio.c
…
ni_tio.h
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
ni_tiocmd.c
…
ni_usb6501.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
pcl711.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
pcl724.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
pcl726.c
comedi: pcl726: Prevent invalid irq number
2025-08-28 16:31:09 +02:00
pcl730.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
pcl812.c
comedi: pcl812: Fix bit shift out of bounds
2025-07-24 08:56:28 +02:00
pcl816.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
pcl818.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
pcm3724.c
comedi: comedi_8255: Rework subdevice initialization functions
2023-10-05 13:34:04 +02:00
pcmad.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
pcmda12.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
pcmmio.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
pcmuio.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
plx9052.h
…
plx9080.h
…
quatech_daqp_cs.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
rtd520.c
comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()
2023-10-05 13:34:04 +02:00
rti800.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
rti802.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
s526.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
s626.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
s626.h
…
ssv_dnp.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
usbdux.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
usbduxfast.c
comedi: Move the main COMEDI headers
2021-11-26 16:48:59 +01:00
usbduxsigma.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
vmk80xx.c
comedi: vmk80xx: fix incomplete endpoint checking
2024-04-11 15:16:23 +02:00
z8536.h
…