[PATCH][next] HID: playstation: fix array size comparison (off-by-one)
flat view
STALE2060d
From: Colin King <hidden>
Date: 2021-02-15 17:33:47
Also in:
kernel-janitors, lkml
Subsystem:
hid core layer, hid playstation driver, the rest · Maintainers:
Jiri Kosina, Benjamin Tissoires, Roderick Colenbrander, Linus Torvalds
From: Colin Ian King <redacted>
The comparison of value with the array size ps_gamepad_hat_mapping
appears to be off-by-one. Fix this by using >= rather than > for the
size comparison.
Addresses-Coverity: ("Out-of-bounds read")
Fixes: bc2e15a9a022 ("HID: playstation: initial DualSense USB support.")
Signed-off-by: Colin Ian King <redacted>
---
drivers/hid/hid-playstation.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index 408b651174cf..568a3a067c88 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c@@ -1064,7 +1064,7 @@ static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *r input_report_abs(ds->gamepad, ABS_RZ, ds_report->rz); value = ds_report->buttons[0] & DS_BUTTONS0_HAT_SWITCH; - if (value > ARRAY_SIZE(ps_gamepad_hat_mapping)) + if (value >= ARRAY_SIZE(ps_gamepad_hat_mapping)) value = 8; /* center */ input_report_abs(ds->gamepad, ABS_HAT0X, ps_gamepad_hat_mapping[value].x); input_report_abs(ds->gamepad, ABS_HAT0Y, ps_gamepad_hat_mapping[value].y);
--
2.30.0