diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2020-07-17 15:52:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-31 16:43:14 +0200 |
| commit | 8f6e2f1bca314c4b0fd06ad50c1919581ef659d7 (patch) | |
| tree | 73cc9bab729f47bde7a6f9f49d4569dc3c158a96 /include/linux | |
| parent | b3a6d51d79afb46f43bdcf49722d955ec03fb967 (diff) | |
staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
commit 0bd0db42a030b75c20028c7ba6e327b9cb554116 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: 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 'include/linux')
0 files changed, 0 insertions, 0 deletions