forked from Minki/linux
HID: sony: Perform a boundry check on the sixaxis battery level index.
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@oh.rr.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -854,7 +854,8 @@ static void sixaxis_parse_report(struct sony_sc *sc, __u8 *rd, int size)
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battery_capacity = 100;
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battery_charging = !(rd[30] & 0x01);
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} else {
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battery_capacity = sixaxis_battery_capacity[rd[30]];
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__u8 index = rd[30] <= 5 ? rd[30] : 5;
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battery_capacity = sixaxis_battery_capacity[index];
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battery_charging = 0;
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}
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cable_state = !((rd[31] >> 4) & 0x01);
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