static __le16 brcmf_get_mcs_map(u32 nchain, enum ieee80211_vht_mcs_support supp)
{
	u16 mcs_map;
	int i;

	for (i = 0, mcs_map = 0xFFFF; i < nchain; i++)
		mcs_map = (mcs_map << 2) | supp;

	return cpu_to_le16(mcs_map);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.