Make sure that an out-of-bounds read doesn't occur in the Sixaxis battery level
lookup table in the event that the controller sends an invalid battery status
value in the report.
Signed-off-by: Frank Praznik <frank.praznik@xxxxxxxxx>
---
drivers/hid/hid-sony.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index a51a9c0..b39e3ab 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -854,7 +854,8 @@ static void sixaxis_parse_report(struct sony_sc *sc, __u8 *rd, int size)
battery_capacity = 100;
battery_charging = !(rd[30] & 0x01);
} else {
- battery_capacity = sixaxis_battery_capacity[rd[30]];
+ __u8 index = rd[30] <= 5 ? rd[30] : 5;
+ battery_capacity = sixaxis_battery_capacity[index];
battery_charging = 0;
}
cable_state = !((rd[31] >> 4) & 0x01);
--
1.8.5.3
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