dr_wav: Validate ADPCM block header size against data chunk size#299
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timblechmann wants to merge 1 commit intomackron:masterfrom
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dr_wav: Validate ADPCM block header size against data chunk size#299timblechmann wants to merge 1 commit intomackron:masterfrom
timblechmann wants to merge 1 commit intomackron:masterfrom
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Add a guard to ensure `dataChunkSize` is not smaller than the calculated total block header size (`blockCount * (6 * fmt.channels)`) when parsing ADPCM data. If the header size exceeds the data chunk size, the file is invalid, so metadata is freed and initialization fails early. This prevents underflow in the PCM frame count calculation and avoids processing malformed or truncated WAV files.
Owner
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Thanks. Just acknowledging that I've seen this. Will report back when I get a chance to properly review it. |
mackron
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Apr 24, 2026
Owner
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I've fixed this one manually. Your change was doing the check before Thanks for the report! |
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Add a guard to ensure
dataChunkSizeis not smaller than the calculated total block header size (blockCount * (6 * fmt.channels)) when parsing ADPCM data. If the header size exceeds the data chunk size, the file is invalid, so metadata is freed and initialization fails early.This prevents underflow in the PCM frame count calculation and avoids processing malformed or truncated WAV files.
this file would end up with an invalid totalPCMFrameCount:
notification.wav