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| author | Ian Abbott <abbotti@mev.co.uk> | 2020-07-17 15:52:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-31 16:43:14 +0200 |
| commit | da6e0b325395c2fe93c3be5801beefa073f5ebdf (patch) | |
| tree | 5780195235ba1081abab7b173ccb98ba97be7d5e /include/linux | |
| parent | 1763572bf47502e46addc8e51b1e7385bf13d2ad (diff) | |
staging: comedi: addi_apci_1564: check INSN_CONFIG_DIGITAL_TRIG shift
commit 926234f1b8434c4409aa4c53637aa3362ca07cea upstream.
The `INSN_CONFIG` comedi instruction with sub-instruction code
`INSN_CONFIG_DIGITAL_TRIG` includes a base channel in `data[3]`. This is
used as a right shift amount for other bitmask values without being
checked. Shift amounts greater than or equal to 32 will result in
undefined behavior. Add code to deal with this.
Fixes: 1e15687ea472 ("staging: comedi: addi_apci_1564: add Change-of-State interrupt subdevice and required functions")
Cc: <stable@vger.kernel.org> #3.17+
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20200717145257.112660-4-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions