examples: nrf24l01_btle: Fix RX terminator bounds#3596
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xiaoxiang781216
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nrf24_read() reads up to the nRF24L01 maximum payload length and then appends a NUL terminator for the receive buffer. A full 32-byte payload can therefore write one byte past the local rbuf[32]. Reserve one extra byte for the terminator while keeping the read length capped at NRF24L01_MAX_PAYLOAD_LEN. Dump the number of bytes actually received in the debug path. Signed-off-by: Old-Ding <ai.neo.ae86@gmail.com>
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cederom
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Summary
NRF24L01_MAX_PAYLOAD_LENWhy
nrf24_read()appends a NUL terminator after reading a packet. The local buffer was exactly 32 bytes, which is the nRF24L01 maximum payload length. A full-size payload can therefore return 32 and makerbuf[ret] = '\0'write one byte past the buffer.Testing
git diff --check origin/master..HEADgit show --check --stat --oneline HEADgcc/clang/makeor WSL/bash shell