From: Ming Yen Hsieh mingyen.hsieh@mediatek.com
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@vger.kernel.org Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips") Signed-off-by: Ming Yen Hsieh mingyen.hsieh@mediatek.com --- 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;