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staging: wfx: Use flex_array_size() helper in memcpy()
Make use of the flex_array_size() helper to calculate the size of a flexible array member within an enclosing structure. This helper offers defense-in-depth against potential integer overflows, while at the same time makes it explicitly clear that we are dealing with a flexible array member. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200729233557.GA17693@embeddedor Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -113,7 +113,7 @@ int hif_set_beacon_filter_table(struct wfx_vif *wvif, int tbl_len,
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if (!val)
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return -ENOMEM;
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val->num_of_info_elmts = cpu_to_le32(tbl_len);
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memcpy(val->ie_table, tbl, tbl_len * sizeof(*tbl));
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memcpy(val->ie_table, tbl, flex_array_size(val, ie_table, tbl_len));
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ret = hif_write_mib(wvif->wdev, wvif->id,
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HIF_MIB_ID_BEACON_FILTER_TABLE, val, buf_len);
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kfree(val);
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