diff options
Diffstat (limited to 'drivers/input/mouse/elantech.c')
| -rw-r--r-- | drivers/input/mouse/elantech.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 0b5ed963cb0e..3e78c2602581 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1588,7 +1588,13 @@ static const struct dmi_system_id no_hw_res_dmi_table[] = { */ static int elantech_change_report_id(struct psmouse *psmouse) { - unsigned char param[2] = { 0x10, 0x03 }; + /* + * NOTE: the code is expecting to receive param[] as an array of 3 + * items (see __ps2_command()), even if in this case only 2 are + * actually needed. Make sure the array size is 3 to avoid potential + * stack out-of-bound accesses. + */ + unsigned char param[3] = { 0x10, 0x03 }; if (elantech_write_reg_params(psmouse, 0x7, param) || elantech_read_reg_params(psmouse, 0x7, param) || |