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[glyf] Protect against an unlikely overflow

This commit is contained in:
Behdad Esfahbod 2022-06-27 12:55:13 -06:00
parent 8537d68172
commit 2e9dbdcbbe
1 changed files with 1 additions and 0 deletions
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src/OT/glyf/SimpleGlyph.hh
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@ -171,6 +171,7 @@ struct SimpleGlyph
const HBUINT8 *p = &StructAtOffset<HBUINT8> (&endPtsOfContours[num_contours + 1], const HBUINT8 *p = &StructAtOffset<HBUINT8> (&endPtsOfContours[num_contours + 1],
endPtsOfContours[num_contours]); endPtsOfContours[num_contours]);
if (unlikely ((const char *) p < bytes.arrayZ)) return false; /* Unlikely overflow */
const HBUINT8 *end = (const HBUINT8 *) (bytes.arrayZ + bytes.length); const HBUINT8 *end = (const HBUINT8 *) (bytes.arrayZ + bytes.length);
/* Read flags */ /* Read flags */