On Tue, Feb 25, 2020 at 8:21 AM Dan Carpenter <dan.carpenter(a)oracle.com> wrote:
The "cmd" comes from the user and it can be up to 255. It it's more
than the number of bits in long, it results out of bounds read when we
check test_bit(cmd, &cmd_mask). The highest valid value for "cmd" is
ND_CMD_CALL (10) so I added a compare against that.
Fixes: 62232e45f4a2 ("libnvdimm: control (ioctl) messages for nvdimm_bus and nvdimm
Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Looks good, applied.