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wifi: mt76: mt7925: fix a potential array-index-out-of-bounds issue for clc

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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: c948b5da6b ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20240819015334.14580-1-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Ming Yen Hsieh
2024-08-19 09:53:33 +08:00
committed by Felix Fietkau
parent 5acdc432f8
commit 9679ca7326
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
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@@ -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;