`parse_insn()` is dereferencing the user-space pointer `insn->data` directly when handling the `INSN_INTTRIG` comedi instruction. It shouldn't be using `insn->data` at all; it should be using the separate `data` pointer passed to the function. Fix it. Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx> --- drivers/staging/comedi/comedi_fops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 55722b3..b266cb2 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -950,7 +950,7 @@ static int parse_insn(struct comedi_device *dev, struct comedi_insn *insn, ret = -EAGAIN; break; } - ret = s->async->inttrig(dev, s, insn->data[0]); + ret = s->async->inttrig(dev, s, data[0]); if (ret >= 0) ret = 1; break; -- 1.7.12 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
