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Fix out-of-bound read when passing CharSpan to printf #15796
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The CharSpan object is not a C-style string - it is not terminated with null byte. When using such object with printf-like functions we have to make sure that the length of the string will be passed as well (using "%.*s" syntax). Otherwise, we might face out-of-bound reads which is a security threat.
PR #15796: Size comparison from 8895bdb to 6c05e69 Increases above 0.2%:
Increases (7 builds for esp32, linux, nrfconnect, p6)
Full report (31 builds for cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, qpg, telink)
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Problem
The CharSpan object is not a C-style string - it is not terminated with null byte. When using such object with printf-like functions we have to make sure that the length of the string will be passed as well (using "%.*s" syntax). Otherwise, we might face out-of-bound reads which is a security threat.
Change overview
Testing
Together with PR #15412 :
./scripts/tests/run_test_suite.py \ --target-glob "DL_UsersAndCredentials" \ --chip-tool out/examples/chip-tool/chip-tool \ run \ --all-clusters-app out/examples/all-clusters-app/chip-all-clusters-app \ --tv-app out/examples/tv-app/chip-tv-app \ --door-lock-app out/linux-x64-door-lock-no-ble-tsan/chip-door-lock-app