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Felix Fietkau
48c4d99acd
The response TLV loop advanced by tlv->len without a minimum, so a
theoretical firmware response containing a zero-length TLV could spin
forever, hanging the CPU during device probe.
The u32 payload was also read without bounds checking.
Reject a short fixed field, stop on a TLV whose length underruns the
header or overruns the skb.
Fixes: 5d33053be609 ("wifi: mt76: mt7996: add variants support")
Signed-off-by: Felix Fietkau <[email protected]>