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b7e44d1986
Topology objects store several PCM and DAI names in fixed-size UAPI arrays. Other topology parser paths validate these fields with bounded strnlen() checks before using them as C strings, but the PCM and DAI paths still pass some fixed-size arrays directly to strlen(), devm_kstrdup(), DAI lookup, and diagnostic prints. A malformed topology blob with a non-NUL-terminated PCM, DAI, or stream capability name can therefore make the parser read past the end of the fixed-size field. Reject unterminated PCM and DAI name fields before consuming them as C strings. Fixes:64527e8a35("ASoC: topology: Add FE DAIs dynamically") Fixes:acfc7d46cd("ASoC: topology: Add FE DAI links dynamically") Fixes:0038be9a84("ASoC: topology: Add support for configuring existing BE DAIs") Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com> Link: https://patch.msgid.link/20260604-asoc-topology-check-pcm-dai-names-v1-1-e1b0f6f7c2ce@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>