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| author | Ian Abbott <abbotti@mev.co.uk> | 2020-07-17 17:52:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-20 11:18:57 +0300 |
| commit | 0bd0db42a030b75c20028c7ba6e327b9cb554116 (patch) | |
| tree | 2e73039c056839a42d252a0b3bf89978235c36fe /lib/mpi/mpi-bit.c | |
| parent | f07804ec77d77f8a9dcf570a24154e17747bc82f (diff) | |
| download | linux-0bd0db42a030b75c20028c7ba6e327b9cb554116.tar.xz | |
staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
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: 33cdce6293dcc ("staging: comedi: addi_apci_1032: conform to new INSN_CONFIG_DIGITAL_TRIG")
Cc: <stable@vger.kernel.org> #3.8+
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20200717145257.112660-3-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpi-bit.c')
0 files changed, 0 insertions, 0 deletions