Avoid scanline overflow when reading corrupt tiffs
Check that the actual scanlines to be read by libtiff are not wider than expected. This issue was reported by Samuel Groß and Natalie Silvanovich of Google Project Zero. Change-Id: I2af818d5a3c57643747a7fbfac8bb934cd79efd7 Reviewed-by:Allan Sandfeld Jensen <allan.jensen@qt.io> (cherry picked from commit 124d950b ) Reviewed-by:
Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
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