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fix: HCI should not read data past the end of the available buffer #399

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fix: HCI should not read data past the end of the available buffer #399

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6 changes: 6 additions & 0 deletions hci.go
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Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,12 @@ func (h *hci) poll() error {
// perform read only if more data is available
available := h.transport.Buffered()
if available > 0 {
// limit to buffer size
if available > len(h.buf)-h.end {
available = len(h.buf) - h.end
}

// read in 4 byte aligned chunks
aligned := available + (4-(available%4))%4
n, err := h.transport.Read(h.buf[h.end : h.end+aligned])
if err != nil {
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