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Trim glyph size in ImageFont.getmask() #7669

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merged 5 commits into from Jan 1, 2024

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radarhere
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@radarhere radarhere commented Jan 1, 2024

To protect against potential DOS attacks when using PIL fonts, ImageFont now trims the size of individual glyphs so that
they do not extend beyond the bitmap image.

@radarhere radarhere merged commit 10c2df5 into python-pillow:main Jan 1, 2024
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@radarhere radarhere deleted the imagefont_mask branch January 1, 2024 07:17
@radarhere radarhere changed the title Do not try and crop glyphs from outside of source ImageFont image Trim glyph size in ImageFont.getmask() Jan 1, 2024
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nulano commented Jan 1, 2024

I've made a suggestion to this in #7672.

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