wifi: mt76: mt7996: drop fragments with multicast or broadcast RA

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IEEE 802.11 fragmentation can only be applied to unicast frames.
Therefore, drop fragments with multicast or broadcast RA. This patch
addresses vulnerabilities such as CVE-2020-26145.

Signed-off-by: Benjamin Lin <benjamin-jw.lin@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20250515032952.1653494-4-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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Benjamin Lin 2025-05-15 11:29:47 +08:00 • committed by Felix Fietkau

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commit 80fda1cd7b

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drivers/net/wireless/mediatek/mt76/mt7996/mac.c

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