wifi: mt76: mt7921: validate CLC firmware records

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The CLC region is supplied by firmware, but the loader trusts the
region count and each record length. A malformed image can make the
region table pointer precede the firmware buffer, make the record loop
fail to advance, or index phy->clc past its end. Validate the table and
record bounds before dereferencing or copying.

Fixes: 23bdc5d8ca ("wifi: mt76: mt7921: introduce Country Location Control support")
Signed-off-by: Laxman Acharya Padhya <acharyalaxman8848@gmail.com>
Link: https://patch.msgid.link/CAMyXUJmh=WfwC4_KHupNxYR5e2Gy5QhBDL5TSG6XEW-XLa+X4Q@mail.gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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Laxman Acharya Padhya 2026-07-21 10:17:40 +00:00 • committed by Felix Fietkau

parent 7910bd565d

commit 9417c5818a

1 changed files with 24 additions and 4 deletions

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drivers/net/wireless/mediatek/mt76/mt7921/mcu.c

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