fix(tiff): fix heap overflow unpacking sub-8-bit contig CMYK samples#5296
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We had missed a case where bit_convert needed outputs to go to the scratch buffer: PHOTOMETRIC_SEPARATED, but not requesting raw color. (Because the real number of channels differ from what we are presenting to the caller.) Assisted-by: Claude Code / Sonnet 5 Signed-off-by: Larry Gritz <lg@larrygritz.com>
jessey-git
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Jul 4, 2026
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Looks ok to me. The m_photometric == PHOTOMETRIC_SEPARATED && !m_raw_color conditional is used in several other places already.
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We had missed a case where bit_convert needed outputs to go to the scratch buffer: PHOTOMETRIC_SEPARATED, but not requesting raw color. (Because the real number of channels differ from what we are presenting to the caller.)
Assisted-by: Claude Code / Sonnet 5