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If the adp5588_read function returns 0, then there will be an overflow of the kpad->keycode[key_val - 1] buffer.

If the adp5588_read function returns a negative value, then the logic is broken - the wrong value is used as an index of the kpad->keycode array.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Cc: stable@vger.kernel.org Signed-off-by: Denis Arefev arefev@swemel.ru --- drivers/input/keyboard/adp5588-keys.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c index 90a59b973d00..19be8054eb5f 100644 --- a/drivers/input/keyboard/adp5588-keys.c +++ b/drivers/input/keyboard/adp5588-keys.c @@ -272,6 +272,8 @@ static void adp5588_report_events(struct adp5588_kpad *kpad, int ev_cnt) int key = adp5588_read(kpad->client, Key_EVENTA + i); int key_val = key & KEY_EV_MASK;

+ if (key_val <= 0) + continue; if (key_val >= GPI_PIN_BASE && key_val <= GPI_PIN_END) { for (j = 0; j < kpad->gpimapsize; j++) { if (key_val == kpad->gpimap[j].pin) {