From: Matteo Semenzato <[email protected]> The comedi_cmd struct has an hole after chanlist_len that could contain uninitialized memory, this struct is copied to userspace.
Signed-off-by: Matteo Semenato <[email protected]> --- drivers/staging/comedi/comedi_fops.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 727640e..1cdf0a2 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -1718,6 +1718,8 @@ static int do_cmdtest_ioctl(struct comedi_device *dev, unsigned int __user *user_chanlist; int ret; + memset(&cmd, 0, sizeof(cmd)); + /* get the user's cmd and do some simple validation */ ret = __comedi_get_user_cmd(dev, arg, &cmd); if (ret) -- 2.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
