From: Ming Yen Hsieh <mingyen.hsieh@xxxxxxxxxxxx>
Due to the lack of checks on the clc array, if the firmware supports
more clc configuration, it will cause illegal memory access.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@xxxxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index 9dc22fbe25d3..c6c380571fd8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -638,6 +638,9 @@ static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name)
for (offset = 0; offset < len; offset += le32_to_cpu(clc->len)) {
clc = (const struct mt7925_clc *)(clc_base + offset);
+ if (clc->idx > ARRAY_SIZE(phy->clc))
+ break;
+
/* do not init buf again if chip reset triggered */
if (phy->clc[clc->idx])
continue;
--
2.18.0
